✦ Highly effective pH adjuster that brings acidic formulations into the optimal skin-compatible range of 5.0 to 7.5
✦ Reacts with stearic acid and other fatty acids to form smooth, stable oil-in-water emulsions without additional emulsifiers
✦ Produces elegant, lightweight cream and lotion textures with a non-greasy skin feel
✦ Essential buffering agent in cleansers, shaving creams, hair gels, and styling products
✦ Water-soluble and easy to incorporate at any stage of the formulation process
✦ Functions as both a neutralizer and co-emulsifier, reducing the need for complex emulsification systems
✦ Widely used across the global cosmetics industry with a well-established safety profile at recommended concentrations

Triethanolamine, abbreviated as TEA, is a clear to pale yellow viscous liquid belonging to the alkanolamine family. It has been used in cosmetic and personal care manufacturing for decades as a reliable pH adjuster, emulsifier, and surfactant booster. Its ability to neutralize acidic ingredients made it a foundational chemical in cream and lotion formulation worldwide.

What makes TEA particularly valuable is its dual functionality. When combined with fatty acids like stearic acid, it forms an in-situ soap that acts as a powerful emulsifying system, creating stable oil-in-water emulsions with a smooth, elegant texture. This eliminates the need for separate emulsifying waxes in many formulations and gives formulators precise control over product viscosity and feel.

Bio Shop Pakistan supplies cosmetic-grade Triethanolamine suitable for DIY beauty formulators, cosmetic manufacturers, soap makers, and personal care entrepreneurs.

INCI Name : Triethanolamine
Chemical Name : 2,2',2''-Nitrilotriethanol
CAS Number : 102-71-6
Molecular Formula : C6H15NO3
Appearance : Clear to pale yellow viscous liquid
Odor : Mild ammoniacal
pH (1% solution) : 10.5
Solubility : Fully miscible in water and ethanol
Specific Gravity : 1.120 to 1.128 at 20°C
Flash Point : 179°C (354°F)
HLB Value : Not Applicable
Recommended Use Level : 0.5% to 5% (typically 2% to 3% for emulsification)
Type : Synthetic organic amine
Shelf Life : 24 months when stored properly

Skincare (Creams, Serums, Lotions) ★★★★★
TEA is one of the most widely used pH adjusters and emulsifiers in skincare cream and lotion formulations. Use at 2% to 3% to neutralize stearic acid and form a stable, elegant oil-in-water emulsion base.

Haircare (Styling Gels, Setting Lotions) ★★★★☆
Commonly used in hair gels, styling products, and setting lotions where it acts as a neutralizer for carbomer gels and a viscosity modifier. Typical use level in hair gels is 0.5% to 2% to neutralize carbomer polymers.

Soap Making (Liquid Soap, Shaving Cream) ★★★★☆
TEA reacts with fatty acids to produce triethanolamine soaps used in shaving creams and liquid cleansing products. It creates rich, stable lather with a smooth skin feel ideal for shaving formulations.

Body Care (Lotions, After-Sun, Massage Creams) ★★★★★
Excellent in body lotions and after-sun products where lightweight, non-greasy emulsions are desired. Combine with stearic acid at a 1:2 to 1:3 ratio of TEA to stearic acid for optimal emulsion stability.

Functional Cosmetics (Cleansers, Makeup Removers) ★★★★☆
Used in facial cleansers and makeup removers as a pH adjuster and mild surfactant booster. Keep concentration at 2% or below in rinse-off products for optimal skin compatibility.

In my years of formulating creams and lotions, I have found that the TEA-to-stearic-acid ratio is the single most important variable in getting a perfect emulsion. Too little TEA and the cream breaks; too much and the product feels soapy and has an elevated pH that irritates skin. I always aim for a molar ratio where TEA neutralizes approximately one-third of the stearic acid present, leaving the remaining stearic acid to function as a co-emulsifier and thickener. This gives a stable, pearlescent cream with a luxurious glide.

ADVANCED TIP: For a classic vanishing cream base, use 5% stearic acid with 1.5% to 2% TEA. Add TEA to the heated water phase at 70°C to 75°C, then slowly pour the oil phase containing melted stearic acid into the water phase while stirring vigorously. The neutralization reaction occurs immediately, forming a self-emulsifying system. Adjust final pH to 6.0 to 7.0 with citric acid if needed.

Normal Skin : ★★★★★ — Well tolerated at standard use levels with no irritation concerns.
Dry Skin : ★★★★☆ — Effective in rich cream bases but does not provide moisturization on its own.
Oily Skin : ★★★★☆ — Creates lightweight emulsions ideal for oily skin when formulated at lower oil levels.
Combination : ★★★★☆ — Versatile enough for balanced formulations targeting combination skin needs.
Sensitive Skin : ★★★☆☆ — Use at lower concentrations below 2% and ensure final pH is below 7.0 to minimize irritation risk.
Mature Skin : ★★★★☆ — Suitable in anti-aging cream bases though it offers no direct anti-aging benefit.
Acne-Prone : ★★★☆☆ — Non-comedogenic at typical levels but keep concentrations moderate and pH balanced.

CONCEPT 1: Classic Vanishing Day Cream
Usage Level : 2%
Key Ingredients: Stearic Acid (5%), Glycerin (4%), Dimethicone (1%)
Result : A lightweight, fast-absorbing daily moisturizer with a matte finish and elegant silky texture.

CONCEPT 2: Carbomer Styling Hair Gel
Usage Level : 1%
Key Ingredients: Carbomer 940 (0.5%), PEG-40 Hydrogenated Castor Oil (1%), Panthenol (1%)
Result : A clear, strong-hold styling gel with smooth application and no flaking.

CONCEPT 3: Rich Shaving Cream
Usage Level : 3%
Key Ingredients: Stearic Acid (8%), Coconut Oil (5%), Aloe Vera Extract (2%)
Result : A dense, cushioning shaving cream that provides excellent razor glide and post-shave softness.

INCI Declared : Yes — required on all cosmetic product labels
EU Cosmetics Reg : Permitted — maximum 2.5% in leave-on products per EU Regulation 1223/2009
Rinse-Off Limit : 5%
Leave-On Limit : 2.5%
Allergen Alert : No — not a listed fragrance allergen
Skin Safety : Safe at recommended levels; patch test advised for sensitive individuals
Eye Area Use : Use with caution — may cause mild irritation at higher concentrations
Ingestion : Not for internal use
Pregnancy Use : Consult physician — limited specific data on topical use during pregnancy
Child Safety : Avoid in products for children under 3 years; use diluted in products for older children
Ventilation : Recommended when handling concentrated liquid
Storage : Cool dry place away from direct sunlight; keep container tightly closed
Container : HDPE or glass; avoid reactive metals such as copper and aluminum

⚠️ TEA can form nitrosamines in the presence of nitrosating agents. Never combine with nitrosating ingredients such as sodium nitrite. Ensure raw materials are certified nitrosamine-free. EU regulations restrict TEA to a maximum purity requirement of 99% with a secondary amine content below 0.5%

Working pH Range : 7.0 to 9.5 (most effective as a neutralizer in this range)
Heat Stability : Stable up to 80°C; can be added to the heated water phase during emulsification
Freeze-Thaw Stable : Yes
Emulsion Type : O/W
Emulsification Phase: Hot phase (water phase)
Compatible With : Stearic acid, carbomers, fatty alcohols, glycerin, most nonionic and anionic surfactants
Incompatible With : Nitrosating agents, strong acids at high concentrations, copper and aluminum metals
Oxidation Risk : Low — not prone to oxidation under normal storage conditions
Discoloration Risk : Possible — may yellow over time with exposure to air and light; store sealed
Formulation Notes : Always add TEA to the water phase before combining with the oil phase. When neutralizing carbomers, add TEA slowly with gentle stirring to avoid air incorporation.

Q: What does Triethanolamine do in a cream or lotion?
A: TEA serves two functions: it adjusts the pH of the formulation to a skin-friendly range, and it reacts with fatty acids like stearic acid to form an emulsifier in situ. This creates stable, smooth cream textures without needing a separate emulsifying wax.

Q: How much TEA should I use to neutralize stearic acid?
A: A common starting ratio is approximately 1 part TEA to 2.5 to 3 parts stearic acid by weight. For example, use 2% TEA with 5% to 6% stearic acid. Always check the final pH and adjust to stay between 6.0 and 7.5.

Q: Is Triethanolamine safe for skin at recommended concentrations?
A: Yes, TEA has been reviewed by the Cosmetic Ingredient Review panel and is considered safe at concentrations up to 5% in cosmetic products, provided the product does not contain nitrosating agents. EU regulations cap leave-on products at 2.5%.

Q: Can TEA be used to neutralize Carbomer gels?
A: Yes, TEA is one of the most common neutralizers for Carbomer 940 and 980 polymers. Add it slowly to the dispersed carbomer gel with gentle stirring until the gel thickens and clears. Typical use level is 0.5% to 1.5% depending on carbomer concentration.

Q: How does TEA compare to sodium hydroxide as a pH adjuster?
A: Both adjust pH effectively, but TEA also functions as a co-emulsifier when paired with fatty acids, which sodium hydroxide does not. Sodium hydroxide is stronger and used in smaller amounts, while TEA provides buffering capacity and contributes to emulsion texture. Sodium hydroxide is preferred in soap making, while TEA is favored in cream and gel formulations.