✦ Pre-diluted 10% birch tar in DPG for easy, accurate dosing of a very powerful material
✦ Intense smoky, tarry, leathery aroma — the heart of classic leather accords
✦ Essential building block for cuir de Russie, smoky chypre, and rugged fougère styles
✦ Long-lasting base note that anchors and adds rugged depth to compositions
✦ Used in iconic leather and smoky fragrances throughout perfumery history
✦ Blends with labdanum, castoreum-style bases, woods, and birch leaf for leather effects
✦ Vegan and animal-free — a plant-derived alternative to animalic leather notes

Birch tar is one of perfumery's oldest smoky materials, produced by the dry distillation (pyrolysis) of birch bark. It has been used for centuries in tanning leather, which is exactly why its scent reads as authentic leather to the nose. The rectified oil used in perfumery is a refined version of the crude tar.

What makes birch tar special is its unmistakable campfire-meets-leather character — smoky, phenolic, and tar-like all at once. It is extraordinarily potent, which is why it is offered here pre-diluted to 10% in DPG, giving formulators the control needed to use it without overwhelming a blend.

Bio Shop Pakistan supplies cosmetic-grade birch tar (10% in DPG) suitable for leather accords, smoky orientals, masculine fougères, attar and mukhallat blending, and any composition needing a rugged, authentic leather note.

SCENT DESCRIPTION: A dense plume of smoke rising off a campfire, wrapped in worn leather and birch bark. The opening is sharply phenolic and tarry, almost medicinal, like creosote and burnt wood. Underneath sits a dry, smoky-leather warmth that lingers and grounds the composition. The overall effect is rugged, masculine, and deeply nostalgic.

NOTE POSITION: Base

FRAGRANCE FAMILY: Leather · Smoky · Woody

FACETS: Smoky · Tarry · Leathery · Phenolic · Birch-bark

TENACITY: Very High — 24+ hours on blotter

SILLAGE: High — projects strongly even at low dosage

Chemical Name : Birch Tar Oil (Rectified), 10% in Dipropylene Glycol
CAS Number : 8001-88-5 (birch tar oil)
Synonyms : Birch Tar Rectified, Oleum Rusci, Betula Tar, Smoky Leather Base
Purity % : 10% active in DPG carrier
Appearance : Dark brown to amber mobile liquid
Odor Threshold : Very low — detectable in trace amounts
Solubility : Soluble in alcohol and most oils; dilution improves handling
Specific Gravity: Verify with supplier (approx. DPG-dominant)
Flash Point : Verify with supplier CoA
Type : Natural (plant-derived, pre-diluted in synthetic carrier)

Fine Fragrance ★★★★★
The signature material for leather and smoky chypre compositions. Used in trace amounts to build authentic leather, campfire, and tar effects in niche and classic perfumery.

Attar & Oriental Blending ★★★★☆
Adds rugged, smoky depth to oud, leather, and mukhallat blends. A little brings a tanned-leather realism that complements dark, resinous orientals.

Functional Fragrance ★★☆☆☆
Possible in some smoky or leather-themed products, but its dark color and phenolic strength limit broad functional use.

Cosmetics ★☆☆☆☆
Rarely used in skincare or cosmetics due to discoloration risk and intense odor. Reserved mainly for fine fragrance applications.

Home Fragrance ★★★☆☆
Effective in smoky candles, incense, and leather-themed diffusers, though color and strength require careful dosing.

Typical use rates (of the 10% dilution — adjust for active content):

EDP : 0.5 – 3%
EDT : 0.5 – 2%
Body Lotion : trace – 0.2%
Shampoo/Body Wash: trace – 0.1%
Candle : 0.5 – 2%
Reed Diffuser : 0.5 – 2%
Soap : 0.2 – 1%

⚠️ Birch tar is extremely powerful — start at the lowest rate and build up.
⚠️ Crude (unrectified) birch tar is IFRA-restricted due to PAH content; only rectified material is used in perfumery.
⚠️ IFRA 51st Amendment sets specific limits for Birch Tar Oil (Rectified) by product category. Exact percentages are category- and grade-specific — verify current limits at ifrafragrance.org and confirm grade with your supplier CoA before finalizing a formula.

Method 1 — Leather Accord Core
Use as the smoky-leather heart, supported by labdanum and isobutyl quinoline-style notes to build a classic leather base.

Method 2 — Smoky Accent
Add at trace levels to chypres, fougères, or woody blends to introduce a campfire whisper without dominating.

Method 3 — Oriental Depth
Combine with oud, resins, and amber notes to give mukhallat and attar blends a tanned, rugged realism.

BEST PAIRINGS

Labdanum → Builds rich, ambery leather depth
Castoreum base → Reinforces animalic-leather realism
Cedarwood → Adds dry woody structure to smoke
Birch leaf → Sharpens the green-leather facet
Vetiver → Earthy-smoky grounding
Vanilla → Softens harsh phenolic edges

AVOID: Overdosing — it quickly dominates and turns a blend acrid. Avoid heavy use in light florals or fresh citrus where smoke feels out of place.

Birch tar is one of those materials that defines a genre. A single drop too much can ruin an entire batch, but used correctly it delivers a leather realism no synthetic alone quite matches — that worn saddle, smoke-and-tar character that anchors a composition with rugged authenticity.

ADVANCED TIP: Build your leather accord around 0.5% birch tar (of the 10% dilution) against 3% labdanum and 1% of a quinoline-type leather note, then add a touch of vanilla or tonka to round the phenolic edge. Always let it mature 48–72 hours before judging — birch tar mellows and integrates noticeably as it settles.

Physical State : Liquid (10% solution in DPG)
Skin Safety : Use only within IFRA limits in finished products; do not apply neat
Eye Contact : Avoid — irritant; flush with water if exposed
Ingestion : Do not ingest; keep away from children
Ventilation : Use in well-ventilated area; strong vapor
Storage : Cool, dark place, tightly sealed, away from light
Shelf Life : 2–3 years stored properly
Container : Amber glass or HDPE; can stain — handle carefully
Flammability : Verify flash point with supplier CoA

Q: Why is birch tar sold at 10% instead of neat?
A: Neat birch tar is extremely powerful and hard to dose accurately. The 10% dilution in DPG gives you far better control in blending.

Q: What is birch tar used for in perfumery?
A: It is the classic base for leather accords, smoky chypres, and rugged fougères. It adds an authentic campfire-and-leather character.

Q: How much should a beginner use?
A: Start very low — around 0.5% of the dilution in your blend. You can always add more, but it is hard to take back.

Q: Will it discolor my product?
A: Yes, it is dark brown and can tint lighter formulas. Reserve it mainly for fine fragrance rather than clear cosmetics.

Q: How does rectified birch tar compare to crude birch tar?
A: Rectified birch tar is refined for perfumery and is the safe, usable grade. Crude birch tar is IFRA-restricted due to its PAH content and is not used in fragrance.