Common Name(s): Isobutyl tallowate,isobutanol (branched c4) tallow fatty acids (c16/c18 mixed) ester

DESCRIPTION

What It Does: Softens and conditions skin with a light, non-greasy feel.

Why It's Used: Used for its animal-derived branched ester; medium-weight emollient; non-crystallizing emollient properties; suitable for lightweight skin care where non-greasy texture is key.

How It Works: Ester of isobutanol (branched c4) (branched or specialty alcohol) with tallow fatty acids (c16/c18 mixed); branching reduces crystallinity and greasiness; provides smooth, dry-oil skin feel.

Typically Found In: Lightweight moisturizers,sunscreens,skin serums,body lotions

TECHNICAL DETAILS

Primary Category: Functional ingredient – emollient

Secondary Functions: Skin conditioning,texture modification,spreading agent

Application Areas:

Typical Concentration Range: 0.5%–10%

SOURCING & ETHICS

Vegan Status: No - animal-derived

Halal Status: Conditional - halal slaughter certificate required (species declaration and slaughter method)

Source Notes: Isobutanol (branched c4) and tallow fatty acids (c16/c18 mixed); plant or synthetic origin. [audit 2026-07-29 rev2: name declares rendered fat or animal tissue; halal status depends on species and slaughter, neither of which is in the record. determination requires shariah-panel sign-off.]

SKIN COMPATIBILITY

Irritancy Rating: 1/5 – very low

Comedogenicity Rating: 1/5 – low

Sensitivity Concerns: Generally well tolerated.

Safe for Sensitive Skin: Yes

SAFETY & COMPATIBILITY

Safety Profile: Good safety profile. ewg score: 1.

Works Well With: Other emollients,silicones,natural oils,humectants

Avoid Combining With: No significant incompatibilities

SCIENTIFIC NOTE

Isobutyl tallowate: branched c4 isobutanol + tallow fatty acids (predominantly palmitic/stearic); medium-weight emollient; animal-derived; non-crystallizing due to isobutyl branching.

Last Verified: 2026-03-28

Primary Sources: Cosing database,inci dictionary