Octadecan-1-ol · 1-Octadecanol · CAS 112-92-5 · INCI: STEARYL ALCOHOL
Rawaghan Alcohol (روغن الکحل) — Pakistan’s foundational cosmetic emollient. White waxy flakes derived from coconut and palm kernel oil via catalytic hydrogenation. Thickens creams, stabilises conditioners, and structures body butters — from Lahore winter moisturisers to Karachi bridal hair masks. EU-permitted, FDA GRAS, and unambiguously Halal.
0 — fully saturated C18 chain · No double bonds · Maximum chemical stability · No oxidation sites
EU Cosmetics Reg Status
✓ Permitted — Not listed in Annex II, III, IV, V, or VI of EU Cosmetics Reg (EC) No 1223/2009. No restrictions.
FDA Status
✓ Approved cosmetic ingredient · GRAS food additive (21 CFR 172.864) · CIR: safe for cosmetic use
Skin Type Suitability
All types · Excellent for dry, sensitive, mature, atopic · Keep ≤2% in oily/acne-prone facial formulas · Comedogenicity: 2/5
Shelf Life
24–36 months sealed at ≤30°C, low humidity · No preservative needed in anhydrous formulas · Store in sealed HDPE/PP bags
Introduction
Rawaghan Alcohol — The Emollient Workhorse
Stearyl Alcohol is one of the foundational fatty alcohols of modern cosmetic science — a multi-functional ingredient that thickens, stabilises, conditions, and gives richness of texture to creams, lotions, hair conditioners, and body butters worldwide. From premium moisturisers and bridal hair masks to cleansing balms and whipped body butters, this white waxy ingredient delivers the creamy, skin-loving feel that consumers associate with quality skin care. Unlike the drying short-chain alcohols (ethanol, isopropyl alcohol) that strip sebum and damage the skin barrier, Stearyl Alcohol belongs to the fatty alcohol family — chemically related to the natural wax esters in human sebum. Its saturated C18 carbon chain integrates directly into the stratum corneum’s intercellular lipid lamellae, replenishing barrier lipids, reducing transepidermal water loss (TEWL), and delivering the characteristic smooth, non-greasy skin feel of high-performance cosmetics.
For Pakistani cosmetic formulators, Stearyl Alcohol addresses several critical market needs: the demand for rich, creamy lotion textures for Pakistan’s dry winter climate in Lahore, Islamabad, and Quetta; the requirement for stable conditioner bases for the thick, coarse South Asian hair profile; and the structuring of whipped body butters for wedding, bridal, and gifting markets. Its high melting point (~59°C) also solves a specific Pakistan summer challenge: whipped body butters based solely on Shea Butter and carrier oils collapse in the 38–45°C summer heat of Lahore and Karachi — Stearyl Alcohol at 3–5% provides the structural framework that keeps body butters solid and appealing through Pakistan’s hottest months. At typical use levels of 1–10%, it performs as emollient, co-emulsifier, viscosity builder, and structuring agent simultaneously — providing extraordinary cost-in-use efficiency.
Bio Shop™ Pakistan — Sourcing Note
Bio Shop™ Pakistan stocks cosmetic-grade Stearyl Alcohol as plant-derived white waxy flakes — the same specification used in professional cosmetic manufacturing worldwide. Sourced from established international manufacturers (China, Malaysia, Germany) with full CoA documentation, Halal certification, and consistent specification: ≥97% n-octadecanol by GC, melting range 55–61°C, acid value ≤0.5 mg KOH/g. Available for small-batch DIY formulators through to commercial-scale manufacturers. Visit bioshop.pk/products/stearyl-alcohol for current stock and pricing.
Formula / MWC₁₈H₃₈O · 270.49 g/mol · Linear: CH₃—(CH₂)₁₆—CH₂—OH
Chemical ClassC18 Saturated Long-Chain Fatty Alcohol (n-alkan-1-ol) · Primary alcohol
Functional GroupsPrimary alcohol (–OH terminal) · Saturated C18 alkyl chain · No double bonds, no ester linkages
Degree of Unsat.0 — fully saturated · No double bonds · Maximum oxidative and hydrolytic stability
Synthesis RouteCatalytic hydrogenation of stearic acid (from coconut/palm kernel): C₁₇H₃₅COOH + H₂ → C₁₇H₃₅CH₂OH. Cu/Cr or Cu/Zn catalyst, 200–300 bar H₂, 200–250°C; vacuum distillation for final purity
Natural OccurrenceTrace amounts in plant wax esters and mammalian epidermis/hair follicles; commercial supply 100% semi-synthetic from vegetable oil
HLB Value~15–16 (highly lipophilic) · Co-emulsifier role only · Forms lamellar gel network at oil-water interface
Urdu / PakistanRawaghan Alcohol (روغن الکحل) · Chikna Alcohol (چکنا الکحل) · Modern equivalent of traditional malai (ملائی) emollient tradition
Grade & Purity Profiles
Four Commercial Grades
Stearyl Alcohol for cosmetic use is available in a single principal specification — cosmetic/pharmaceutical grade — with minor variations across suppliers. Technical grades intended for lubricants or plasticisers are not appropriate for cosmetic formulation. Bio Shop™ Pakistan stocks Cosmetic/Pharmaceutical Grade (≥97% GC) with full CoA documentation. Understanding grade distinctions protects Pakistani formulators from grey-market substitution.
Professional Standard · Bio Shop™ Grade
Cosmetic / Pharma Grade
≥97% n-octadecanol by GC · White waxy flakes · Acid value ≤0.5 · CoA included
GC Purity
≥97%
Melting range 55–61°C · Hydroxyl value 200–220 mg KOH/g · Iodine value ≤2.0
"The professional standard for all cosmetic applications. Clean white waxy flakes with neutral fatty odour. Melts completely clear at 60°C. Identical specification to materials used in global luxury skin care and conditioner brands. Bio Shop™ Pakistan primary stock with Halal certification available."
Standard commercial blend · Lower melting point than pure stearyl · Versatile
"The most commercially used fatty alcohol blend globally. Cetostearyl Alcohol from Bio Shop™ delivers broader polymorphic crystal structure, slightly lighter cream texture, and excellent performance across a wide temperature range. Often preferred in conditioner bases where a versatile C16/C18 system is desired over pure C18."
DIY Alternative · Replicate In-Formula
Cetyl Alcohol (C16)
C16 saturated fatty alcohol · MP ~49°C · Lighter feel · Often blended with stearyl
Chain Length
C16
Lighter texture than stearyl · Lower viscosity building · Combines to make cetearyl
"Blend Stearyl Alcohol (3%) + Cetyl Alcohol (3%) from Bio Shop™ to create your own cetearyl alcohol system — the classic conditioner and cream base used in professional formulation. The 1:1 blend delivers broader crystal structure and a more balanced cream texture. Both available at bioshop.pk."
"Common adulterants: paraffin wax (raises melting point, causes unstable emulsions), stearic acid substitution (identified by acid value above 1.0 mg KOH/g — will cause emulsion instability), or cetyl/cetearyl blends sold as pure stearyl. Always request CoA. Melting point test: 55–60°C = genuine stearyl."
Dosage Science
Use Level Behaviour
Stearyl Alcohol’s contribution to a formula is directly proportional to its concentration — from subtle emollient support at 0.5–1.5% to maximum structural richness above 8%. The key principle for Pakistani formulators is balance: Stearyl Alcohol creates structure and richness but needs to be counterbalanced with lightweight esters (CCT, IPM) and adequate humectants (glycerin) for a complete, pleasant formulation. Above 10%, excess Stearyl Alcohol can create an undesirable waxy, heavy feel and emulsion stability issues if not properly balanced.
0.5–1.5% in FormulaSubtle Emollient Lift
Very light emollient contribution; minimal thickening; slight stability improvement. Ideal for lightweight serums with an oil component, basic toners, or lightweight body milks where texture must remain fluid. Barely perceptible skin feel contribution.
1.5–3% in FormulaModerate Creamy Body
Clear emollient skin feel; good stability contribution; clean finish. Ideal for everyday face lotions, lightweight body milks, basic conditioners. Standard day moisturiser range for the Pakistani urban market.
3–5% in FormulaFull Creamy Texture
Full creamy body; noticeable emollient skin softening; excellent emulsion stability. The ideal Pakistani formulation range — standard face creams, body lotions, and hair conditioners. Deep moisturising winter body creams for Lahore target 4–5%.
5–8% in FormulaRich Substantial Texture
Rich, substantial body; deep emollient feel; excellent TEWL reduction; firm structure in body butters and masks. Ideal for rich body creams, whipped butters (critical for Pakistan summer stability), and deep conditioning hair masks for bridal market.
8–10% in FormulaMaximum Emollient Intensity
Very rich, heavy texture; maximum emollient intensity; excellent for heel creams, intensive barrier repair ointments, and overnight body treatments. Balance with CCT or IPM to prevent waxy feel. Well-suited for cold-season Northern Pakistan formulations (Lahore, Islamabad, Quetta winter).
Above 10% in FormulaWaxy — Requires Careful Balance
Very heavy, waxy, film-forming character. Technically possible but requires careful balance with light esters or silicones to prevent unpleasant heavy feel. No safety concern at these levels — purely a texture optimisation question. Limited to specialist barrier formulas and cleansing balms.
Mechanism of Action
Functional Performance Profile
Mechanism 1 · Primary Function
Stratum Corneum Integration
Stearyl Alcohol’s C18 saturated chain is structurally homologous to the long-chain fatty acids in the skin’s own stratum corneum (SC) lipid lamellae — specifically the ceramide fatty acid chains. When applied in a cream or lotion, Stearyl Alcohol intercalates directly into the intercellular lipid bilayers of the upper SC, filling structural gaps caused by barrier disruption, environmental exposure, or ageing. This lipid integration reduces transepidermal water loss (TEWL) by 15–25% (in vitro SC model data), imparts the characteristic smooth, non-greasy skin feel, and provides a sustained emollient reservoir at the skin surface. The mechanism is entirely physical — no chemical reactions, no receptor activation — making Stearyl Alcohol compatible with the complete range of cosmetic actives. For Pakistani consumers dealing with the intense skin dryness of Lahore’s cold winter (4°C minimum) or the harsh climate of Islamabad and Quetta, this barrier-restoration mechanism delivers genuinely perceptible skin improvement.
Mechanism 2 · Emulsion Science
Lamellar Gel Network
Stearyl Alcohol is a co-emulsifier rather than a primary emulsifier — it enhances the stability and sensory properties of emulsions when used alongside primary emulsifiers such as Emulsifying Wax, Olivem 1000, or BTMS-85. Its mechanism is the formation of a lamellar gel network (also called alpha-gel structure) at the oil-water interface. When the melted crystalline Stearyl Alcohol combines with a primary emulsifier during cooling, it participates in forming a liquid crystal phase at the oil droplet surface. This lamellar structure dramatically increases emulsion stability, improves skin feel, and provides the characteristic non-greasy, silky texture of high-quality creams. In Karachi’s extreme summer heat (ambient 38–42°C), this lamellar network is critical: it maintains emulsion stability and prevents phase separation that lower-quality emulsions (lacking fatty alcohol co-emulsification) experience in Pakistan’s challenging climate. The classic formulation ratio is Emulsifying Wax 5% + Stearyl Alcohol 2–3%, which produces a dramatically more stable and pleasing cream than Emulsifying Wax alone.
Mechanism 3 · Rheology
Viscosity and Structuring
Stearyl Alcohol’s waxy crystal network in the oil phase provides the primary viscosity and body contribution in cream and lotion formulations. As the emulsion cools below ~50°C, Stearyl Alcohol crystallises as a semi-solid network that imparts the thick, creamy body consumers expect from quality creams. This structuring function is particularly critical in anhydrous formulations (whipped body butters): Shea Butter and carrier oils alone typically lose their solid, whipped texture in Pakistan’s summer heat above 30–35°C. Stearyl Alcohol at 3–5% in a body butter creates a stable waxy crystal framework that holds the whipped texture solid at up to 38–40°C — resolving one of the most common Pakistani DIY formulation challenges. The processing temperature is critical: Stearyl Alcohol must be fully melted (≥70°C, completely clear liquid) before emulsification, and the emulsion must be cooled slowly with stirring through the 40–55°C crystallisation zone to avoid graininess.
Mechanism 4 · Hair Care
Cuticle Conditioning
On hair fibres, Stearyl Alcohol deposits as a thin lipid coating on the hair cuticle during the rinse phase of conditioner application, reducing inter-cuticle friction, improving perceived softness, and delivering frizz reduction. The film is physical rather than substantive (unlike cationic polymers such as PQ-10 that bind ionically to the hair surface), but the deposition is sufficient to provide perceptible conditioning — especially important for Pakistan’s characteristic coarse, thick, high-porosity South Asian hair. Combined with BTMS-85 (cationic emulsifier) in the classic Pakistani conditioner base, Stearyl Alcohol at 3–6% provides increased conditioner viscosity (consumer perception of richness), emollient coating of each hair fibre, and enhanced cream texture for a luxurious application experience. The standard Professional Conditioner Base used in Pakistan’s salon market is built around BTMS-85 (4–6%) + Stearyl Alcohol (3–4%) — the co-emulsifier role of stearyl is as important as its emollient role in achieving the optimal conditioner performance for Pakistani thick hair.
Three production-ready formulas from the Bio Shop™ Pakistan reference document — exact weights, exact percentages, all verified at 100g. Formula 1 is a rich O/W night cream with niacinamide. Formula 2 is a professional hair conditioner with BTMS-85 and keratin protein. Formula 3 is an anhydrous whipped body butter engineered to resist Pakistan summer heat. All ingredients available at bioshop.pk.
Raat Ki Malai Cream · رات کی ملائی کریم
Deep Nourishing Night Cream · Rich O/W emulsion · 100g batch · 50ml glass pot · Pakistani women 28–50, dry skin, winter season
Heat Phase A and Phase B separately to 75°C until clear. Add Phase B to Phase A with high-shear mixing (immersion blender 2–3 min). Stir while cooling. At 40°C add Phase C ingredients one by one. Adjust pH to 5.5–6.0 with citric acid. Fill into sanitised 50ml glass pots at ~35°C. Yield: ivory white, medium-rich cream (1,800–2,500 cP). Inspiration: traditional malai night nourishment ritual (raat bhar ki ghiza) — modernised with niacinamide brightening. Target PKR 1,200–1,800 per 50ml.
Silky Smooth Conditioner · سلکی سمود کنڈیشنر
Professional Rinse-Off Hair Conditioner · BTMS-85 base · 100g compound · 200ml squeeze tube · Pakistani women 18–45, normal-to-damaged hair
Heat Phase A and Phase B separately to 80°C. Pour Phase B slowly into Phase A with high-shear mixing 3–5 min. Cool with continuous stirring. At 40°C add Phase C. Adjust pH to 4.5–5.0 with citric acid (promotes cuticle closure, enhances shine). Fill at 35°C. Performance: hair soft, smooth, detangled; reduced frizz; visible shine on Pakistani coarse hair. Target PKR 700–1,100 per 200ml.
Gul-e-Bahar Body Butter · گُلے بہار وھپڈ باڈی بٹر
Whipped Anhydrous Body Butter · Pakistan summer heat-stable · 100g batch · 250ml jar · Women 20–40, dry skin, gifting market
Phase A — Butters & Waxes (melt together at 65–70°C)
Melt Phase A at 65–70°C until fully clear. Add Phase B oils at 60°C and stir to combine. Pour into mixing bowl and chill to 25–28°C (semi-solid, not fully set). Whip with electric hand mixer 3–5 min until fluffy. Add Phase C quickly. Transfer to sanitised 250ml jars immediately. Anhydrous formula — no preservative required; no water = no microbial growth. Stability note: Stearyl Alcohol (4%) + Candelilla Wax (1.5%) prevents melt in Pakistan summer up to ~38–40°C. Test in 40°C incubator 48 hours before commercial launch. Target PKR 1,500–2,500 per 250g jar.
Synergies
Classic Pairings
Stearyl Alcohol is chemically compatible with virtually all cosmetic ingredients. The following pairings represent the most commercially successful and technically validated combinations for Pakistani formulation, confirmed from the reference document.
Combine 1:1 with Stearyl Alcohol for the professional conditioner and cream base. Available at bioshop.pk
Verdict: Best companion, not replacement. The classic 1:1 Stearyl + Cetyl blend produces broader polymorphic crystal structure than either fatty alcohol alone — the foundation of virtually every professional conditioner and body cream globally. Available at bioshop.pk/products/cetyl-alcohol
Cetostearyl Alcohol
C16/C18 Blend · 50:50 Cetyl/Stearyl · CAS 8005-44-5
Feel vs. Stearyl Alcohol
Essentially identical performance; commercial pre-blended version of the Stearyl+Cetyl 1:1 system; more convenient for standard applications
Use Level / EU Status
2–8% · ✓ EU Permitted · FDA approved · ✓ Halal · CosIng listed
When to Choose Instead
When convenience matters over optimisation; one ingredient vs. two; consistent lot-to-lot ratio; ideal for high-volume production
Pakistan Application
The standard commercial conditioner base globally; widely expected in conditioner formulations. Available at bioshop.pk
Verdict: Functionally equivalent to a Stearyl+Cetyl 1:1 blend. Choose Cetostearyl Alcohol for convenience at scale; choose separate Stearyl + Cetyl Alcohol when precise ratio control is needed. Available at bioshop.pk/products/cetostearyl-alcohol
Completely different texture: lightweight, fast-spreading, dry-oil feel; no thickening; no structuring; skin-identical ester emollient
Use Level / EU Status
3–10% · ✓ EU Permitted · ✓ FDA · ✓ Halal · No structuring function
Use With Stearyl Alcohol
Essential complementary partner: CCT lightens and spreads the formula; Stearyl Alcohol provides body and stability. Classic face cream ratio: SA 3% + CCT 5%
Pakistan Application
Prevents Stearyl-based creams from feeling heavy on Pakistani oily-combination facial skin; essential balance partner
Verdict: Complementary emollient, not an alternative. CCT provides the lightweight counterpoint that makes Stearyl Alcohol-based creams feel non-greasy and modern. Always use together for a balanced Pakistani face cream. Available at bioshop.pk/products/caprylic-capric-tryglyceride
Silky, low-drag slip; water-resistant film; synthetic; does not integrate into SC lipid bilayers; no structural function in emulsions
Use Level / EU Status
0.5–5% · ✓ EU Permitted · Clean beauty debate · Not preferred in Halal-clean positioning
Use With Stearyl Alcohol
Complementary: Dimethicone 1–3% + Stearyl Alcohol 3% = excellent water-resistant body cream with both emollient richness and silicone slip
Pakistan Application
Karachi humid summer formulas benefit from Dimethicone addition for water resistance; Stearyl Alcohol provides the skin feel and structure
Verdict: Functional synergy partner for Karachi summer formulas. Dimethicone adds water resistance and slip; Stearyl Alcohol provides emollient richness, emulsion structure, and Halal naturalness. For clean-beauty or purely halal-natural positioning, use Stearyl Alcohol alone. Available at bioshop.pk/products/dimethicone-tc-1218
Safety & Regulations
EU Cosmetics Reg & Safety Overview
Educational summary of publicly available regulatory data as of 2024–2025. Always consult EU Cosmetics Regulation (EC) No 1223/2009 current text, CosIng database, ingredient Safety Data Sheet, and your regulatory advisor before commercial formulation. This document does not constitute regulatory or safety advice.
✅
EU Cosmetics Regulation — Fully Permitted
Stearyl Alcohol (CAS 112-92-5, CosIng 38319, INCI: STEARYL ALCOHOL) is NOT listed in Annex II (Prohibited), Annex III (Restricted), Annex IV (Colorants), Annex V (Preservatives), or Annex VI (UV Filters) of EU Cosmetics Regulation (EC) No 1223/2009. It is freely permitted for use in all cosmetic and personal care product categories at technically appropriate concentrations. Pakistani manufacturers exporting to the EU market face no regulatory barriers from Stearyl Alcohol and need not apply any special labelling, concentration limits, or safety documentation beyond standard product dossier requirements. The European Commission’s SCCS (Scientific Committee on Consumer Safety) has not identified Stearyl Alcohol as a substance of concern.
✅
CIR Safety Assessment — Conclusive Safe
The Cosmetic Ingredient Review (CIR) Expert Panel — the independent US safety body — concluded in its comprehensive fatty alcohol assessment that Stearyl Alcohol is safe for use in cosmetics at current concentrations of use. Specific findings: Acute oral LD₅₀ (rat) >5,000 mg/kg (practically non-toxic); dermal LD₅₀ >2,000 mg/kg; non-irritating to skin (modified Draize); non-sensitising (Buehler/LLNA negative); non-phototoxic (no chromophores); non-mutagenic (Ames test negative); no evidence of carcinogenicity or reproductive toxicity; negligible percutaneous absorption (<0.1% in vitro). Comedogenicity rating: 2/5 (low). No absolute maximum use level set; use at technically appropriate concentrations per product type.
✅
Pakistan DRAP & Halal — Fully Compliant
No restriction under Drug Regulatory Authority of Pakistan (DRAP) cosmetics guidelines or the Drugs (Cosmetics) Rules under the Drug Act 1976. Pakistani formulators may use Stearyl Alcohol freely in domestic market cosmetic products. The Pakistan Halal Authority (PHA), JAKIM (Malaysia), HFA (UK), and IFANCA (USA) all certify plant-derived Stearyl Alcohol as Halal for cosmetic (external) use. The manufacturing chain from coconut/palm kernel oil through saponification, fatty acid fractionation, and catalytic hydrogenation contains no Haram or Mashbooh materials at any step. Bio Shop™ Pakistan provides Halal compatibility documentation upon request for all batches — suitable for PHA certification submission for finished products targeting Gulf and ASEAN export markets.
⚖️
FDA Status — GRAS & Cosmetic Approved
The US FDA lists Stearyl Alcohol as a permitted cosmetic ingredient with no restrictions and as a GRAS (Generally Recognised as Safe) food additive under 21 CFR 172.864 — one of the highest safety designations available for any chemical substance. For Pakistani cosmetic brands targeting the US export market, Stearyl Alcohol presents no FDA compliance barriers and requires no special documentation. The International Nomenclature of Cosmetic Ingredients (INCI) designation “STEARYL ALCOHOL” must appear exactly as listed on product ingredient declarations for US-market products to meet FDA labelling requirements.
⚔️
Skin Type Considerations — South Asian Skin
Stearyl Alcohol is safe for South Asian skin (Fitzpatrick III–V) with no hyperpigmentation, photosensitivity, or PIH (post-inflammatory hyperpigmentation) risk. Its barrier-strengthening function is specifically beneficial for South Asian skin: by maintaining the SC lipid barrier, it reduces the inflammatory stress that triggers PIH in darker skin types. Key precaution: keep Stearyl Alcohol ≤2% in facial formulas targeting oily or acne-prone skin (common in Pakistan’s young urban population), as its comedogenicity rating of 2/5 means low but real pore-blocking potential in occlusive formulas at high concentrations. For dry, normal, sensitive, mature, and atopic skin types, 3–8% is appropriate and beneficial. No contraindication in pregnancy, lactation, or for children.
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Environmental — Biodegradable, Low Concern
Stearyl Alcohol is readily biodegradable (primary route: microbial beta-oxidation of the fatty chain, identical to natural fatty acid degradation). No significant bioaccumulation potential (BCF <100). No aquatic toxicity concern at typical consumer product release concentrations. The plant-derived, petrochemical-free production route makes Stearyl Alcohol a preferred choice under green chemistry and sustainability criteria. PSQCA Pakistan has not issued environmental use restrictions for Stearyl Alcohol in cosmetic products. Dispose of waste concentrate by dilution with water; suitable for standard industrial effluent treatment. Fully compatible with biodegradable, green-label, and clean-beauty certification requirements.
Handling & Storage
Storing in Pakistan's Climate
Temperature Range
Stable across all Pakistan temperatures. Flakes may begin to soften or fuse above 55°C — maintain warehouse below 40°C in summer. Below 10°C fully solidified; allow to warm up before weighing. No quality impact from seasonal variation.
Container Type
Sealed polyethylene or polypropylene bags inside secondary cardboard packaging. HDPE drums for bulk (≥25 kg). Avoid uncoated metal containers — fatty acids from impurities can cause surface oxidation. Opaque packaging preferred for UV exclusion.
Light Exposure
Not a primary stability concern — Stearyl Alcohol has no chromophores and is not UV-active or photodegradable. However, avoid prolonged direct UV as general good practice. Inner room or dark cupboard is fully adequate. No amber glass required.
Shelf Life
24–36 months sealed at ≤30°C. Once opened: 6–12 months with proper resealing. Primary degradation mechanism is fatty acid contamination (check acid value <0.5 mg KOH/g before formulating from old stock). No preservative required in anhydrous application.
Measuring Technique
Weigh at room temperature (flakes are stable solids). For incorporation, melt fully to clear liquid at 70–80°C before mixing into oil phase. Use a 0.01g precision balance for typical 2–10% additions. Cool slowly with stirring through 40–55°C to prevent graininess.
Processing Caution
Critical: Stearyl Alcohol MUST be fully melted (completely clear liquid, no visible particulates) at ≥70°C before emulsification. Premature crystallisation during rapid cooling causes graininess. Cool emulsions slowly with continuous stirring through 40–55°C crystallisation zone.
Lahore Summer (May–Aug)
Extreme heat 38–45°C. Flakes remain solid below 55°C — no degradation concern. Store in air-conditioned space if available. If flakes fuse into a block from heat, break off pieces — quality is unaffected. Avoid prolonged storage in non-air-conditioned warehouses above 45°C.
Karachi Coastal Climate
High humidity (75–90% RH year-round) causes flakes to absorb moisture and clump. Stearyl Alcohol is hydrophobic and not damaged, but clumped flakes are harder to weigh accurately. Store in sealed HDPE bags; use desiccant packets in storage area. Seal immediately after each use; do not open bulk bags in high-humidity conditions.
⚠ Adulteration check: Genuine Stearyl Alcohol (≥97% GC) is white waxy flakes or beads with a faint neutral-fatty odour. Melting point test: heat in water bath — genuine stearyl melts completely clear at 55–60°C. Melts at 48–52°C = Cetyl Alcohol dilution. Melts above 65°C = paraffin/microcrystalline wax adulteration. Acid value test: genuine ≤0.5 mg KOH/g — if acid value exceeds 1.0 mg KOH/g, material contains stearic acid contamination that will destabilise emulsions. Always request CoA from supplier with GC assay, melting range, and acid value. Bio Shop™ Pakistan provides full documentation for all batches.
FAQs
Frequently Asked Questions
Is Stearyl Alcohol halal? What is its exact origin and manufacturing process?+
Stearyl Alcohol is unambiguously Halal. Here is the complete synthesis chain evidence: (1) The raw material is vegetable oil — coconut oil or palm kernel oil from Malaysia, Indonesia, or the Philippines. Both are clearly halal plant sources. (2) The oil undergoes saponification or hydrolysis (using water and heat, or alkali) to release free fatty acids — a purely chemical process, no animal inputs, no ethanol. (3) Fractional distillation at ~220–260°C isolates stearic acid (C18 fatty acid) — a physical separation step, entirely mineral and chemical. (4) Catalytic hydrogenation: stearic acid (C₁₇H₃₅COOH) + H₂ gas at 200–300 bar and 200–250°C, using a Cu/Cr or Cu/Zn oxide catalyst, converts the carboxylic acid to a primary hydroxyl group (C₁₇H₃₅CH₂OH). Hydrogen gas is inorganic; the metallic catalyst contains no animal materials. (5) Vacuum distillation to purify to ≥97% n-octadecanol. No ethanol, no fermentation, no animal materials, no Mashbooh processing aids at any stage. The Pakistan Halal Authority (PHA), JAKIM (Malaysia), HFA (UK), and IFANCA (USA) all certify plant-derived Stearyl Alcohol as Halal for cosmetic use. Bio Shop™ Pakistan provides Halal compatibility documentation on request for certification body submissions.
How do I verify purity when buying Stearyl Alcohol in Pakistan? What adulterants are common?+
Request a Certificate of Analysis (CoA) from every supplier confirming: Assay ≥97% n-octadecanol by GC; Melting range 55–61°C; Acid value ≤0.5 mg KOH/g; Appearance: white waxy flakes or beads free from discolouration. Perform a simple melting point test without laboratory equipment: place a few flakes in a small glass container in a water bath and monitor the temperature at which they become completely clear liquid. Genuine Stearyl Alcohol melts at 55–60°C. Melts at 48–52°C = significant Cetyl Alcohol content (common substitute). Melts above 65°C = paraffin wax or microcrystalline wax adulteration. For acid value testing without a lab: stearic acid contamination manifests as persistent fatty/soapy odour in finished formulas and emulsion instability (creams separating within days or weeks) — a CoA will confirm with acid value above 1.0 mg KOH/g. Consequences of substandard grade: unstable emulsions that separate, conditioners with wax-like residue on hair, and consumer complaints of sticky greasy film. Always purchase from suppliers with full batch documentation. Bio Shop™ Pakistan provides CoA for all batches.
Why did my cream develop a grainy or sandy texture? How do I prevent and fix this?+
Graininess in Stearyl Alcohol-containing emulsions almost always results from recrystallisation of the fatty alcohol during improper processing. Two causes dominate in Pakistani DIY settings: First, cooling too rapidly — if the emulsion is placed in a cold water bath, refrigerator, or air-conditioned room immediately after making, Stearyl Alcohol crystallises as discrete wax particles rather than as a continuous integrated gel network. Prevent by cooling slowly at room temperature with continuous gentle stirring through the 40–55°C crystallisation zone. In Pakistan’s air-conditioned labs, smaller containers cool quickly from surface contact — use containers with better thermal mass or control cooling actively. Second, oil phase temperature too low during homogenisation — if the oil phase was not fully liquid (completely clear, no visible particulates) at ≥70°C before combining with the water phase, incompletely melted wax particles survive in the emulsion and eventually aggregate into visible grains. Always verify the oil phase is completely clear liquid before proceeding. To fix graininess in a finished batch: gently reheat the entire batch to 65–70°C (fully re-melting all wax), re-homogenise thoroughly with an immersion blender, and cool slowly with stirring. This fully reverses graininess with no quality loss.
What is the correct use level for creams, conditioners, and body butters? Can I exceed 10%?+
The standard ranges from the reference document: Face moisturiser (day): 2–3%; Face moisturiser (night): 3–5%; Body lotion: 2–4%; Body cream (rich): 4–8%; Hair conditioner (rinse-off): 3–6%; Deep conditioning hair mask: 4–8%; Whipped body butter: 3–6%; Cleansing balm: 5–8%. Using more than 8–10% in emulsions is technically possible but rarely provides additional benefit — at very high levels, excess Stearyl Alcohol creates an undesirable waxy, heavy feel and may cause emulsion stability issues if not balanced with adequate emulsifier and lightweight ester levels. In anhydrous body butters, up to 6–8% is reasonable and provides excellent heat-stable structure. The key principle is balance: Stearyl Alcohol creates structure and richness but needs to be counterbalanced with lightweight esters (CCT, IPM) and humectants (glycerin) for a complete, pleasant-feeling formulation. There is no safety concern with using up to 10–15% — it is purely a performance and texture optimisation question.
How do I store Stearyl Alcohol in Pakistan’s climate — both Karachi and Lahore?+
Stearyl Alcohol is extremely stable and requires minimal special precautions. In Karachi (coastal humidity up to 90% RH, summer temperatures 30–42°C): the primary risk is humidity causing flakes to absorb moisture and clump together. The material itself is hydrophobic and not chemically damaged by moisture, but clumped flakes are harder to weigh accurately. Keep in sealed HDPE or polypropylene bags; use a dehumidifier in the formulation area if possible. If flakes fuse into a block from heat, simply break off pieces — quality is completely unaffected. In Lahore (4°C winter minimum to 45°C summer maximum): at temperatures below 55°C, Stearyl Alcohol remains fully solid and stable. Store in a cool room away from direct sunlight. At temperatures approaching the melting point (55–60°C in extreme summer conditions), flakes may soften and fuse — this is entirely reversible on cooling and does not affect quality. For both cities: store in sealed polypropylene or HDPE containers; minimise air headspace in partially used containers; avoid near heat sources. Shelf life under these conditions: 24–36 months sealed; 6–12 months opened with proper resealing.
Is Stearyl Alcohol permitted for EU export? What regulatory documentation is needed?+
Yes — Stearyl Alcohol presents no EU regulatory barriers. It is not listed in any restricted or prohibited annex of EU Cosmetics Regulation (EC) No 1223/2009 (Annex II, III, IV, V, or VI). There are no concentration limits, no mandatory label warnings, and no specific safety documentation requirements beyond the standard Product Information File (PIF) required for all EU cosmetic products. For EU-export product labelling: the INCI name “STEARYL ALCOHOL” must appear exactly as listed on the ingredient declaration (INCI list on pack) in descending order of concentration. No allergen declaration is required (Stearyl Alcohol is not listed as a fragrance allergen under Annex III). For Halal-certified export to UAE, Saudi Arabia, Malaysia, or Indonesia: the plant-derived origin and absence of animal inputs make Stearyl Alcohol straightforwardly certifiable under all major Halal standards. Include Bio Shop™ Pakistan’s CoA and Halal compatibility documentation in your certification submission file. For USA export: FDA has approved Stearyl Alcohol as both a cosmetic ingredient and GRAS food additive — no restrictions. For UK post-Brexit cosmetics: equivalent to EU rules; no restrictions.
Which Pakistani consumer segments and product categories offer the strongest commercial opportunity for Stearyl Alcohol formulations?+
Four segments show the strongest commercial response. First, the bridal and wedding market — Pakistani weddings involve extensive pre-event beauty rituals for both the bride and bridal party, including body polishing, intensive moisturising, and deep hair conditioning. Premium body butters (PKR 1,500–3,500 per 200g), bridal hair masks (PKR 800–1,500 per 200g), and luxury body creams built around Stearyl Alcohol as the emollient base are highly relevant for this high-purchasing-power occasion market. Second, the winter skin care market in Lahore, Islamabad, Quetta, and Peshawar — Pakistan’s cold, dry winters (4°C winter minimum in Lahore) create intense demand for rich, deeply moisturising creams with a substantial, comforting texture that only fatty alcohol-structured emulsions can deliver. Third, the professional hair care segment — Pakistan’s hot, dry climate and hard water create challenging conditions for hair; Stearyl Alcohol-based conditioners (BTMS-85 system) deliver the cream texture and conditioning performance that resonates across all income levels. Fourth, the social-media-driven DIY gifting market — whipped body butters are visually appealing in jars, share well on Instagram and TikTok, and command premium pricing as handmade gifts for Eid and graduation occasions.
What Urdu brand names work for Stearyl Alcohol-based products? How should they be positioned for Pakistani consumers?+
Recommended Urdu naming vocabulary draws on Pakistan’s rich tradition of fatty material emollients. Malai-derived names: Raat Ki Malai (رات کی ملائی — night cream), Shahi Malai (شاہی ملائی — royal cream), Malai-e-Badar (ملائۂ بدر — moon cream). Nature and flower names: Gul-e-Bahar (گُلے بہار — spring blossom, for body butter), Gul-e-Nargis (گل نرگس — narcissus blossom), Bahar-e-Jild (بہار جلد — spring of skin). Hair care names: Baalon Ki Raunaq (بالوں کی رونق — lustre of hair), Zulf-e-Laila (زلف لیلی — locks like Laila, for bridal hair mask). Seasonal positioning: winter products should emphasise jild ki ghiza (جلد کی غذا — skin nourishment); summer body butters should emphasise har mausam mein (ہر موسم میں — for all seasons). Consumer communication: frame Stearyl Alcohol as the precise, scientifically standardised equivalent of traditional malai — the familiar Urdu connection between rawaghan and modern emollient science creates trust. The clean-label, plant-based, Halal-certified origin enables premium positioning: “100% nabati asbaab — saaf aur halal” (100% plant-based ingredients — pure and Halal).
Everything on this page and substantially more — complete catalytic hydrogenation synthesis mechanism with step-by-step diagrams, full structure-activity relationship analysis of the C16–C22 fatty alcohol series, detailed lamellar gel network formation chemistry and its role in emulsion stability, comprehensive skin science including stratum corneum lipid integration mechanism and TEWL reduction data, Fitzpatrick III–V South Asian skin efficacy and safety analysis, clinical and in-vitro evidence base (CIR Expert Panel comprehensive assessment, reconstructed human epidermis model data), full compatibility guide for 18 common cosmetic ingredients, Unani medicine and traditional Pakistani skin care cultural connections (malai, roghan, ubtan tradition), accelerated stability testing protocol for Pakistan climate conditions, three complete product concepts with pricing analysis (Raat Ki Malai Cream at PKR 1,200–1,800, Silky Smooth Conditioner at PKR 700–1,100, Gul-e-Bahar Whipped Body Butter at PKR 1,500–2,500), and a comprehensive glossary of 18 key cosmetic chemistry terms — all in one complete professional reference document.
