Common Name(s): Isostearoyloxy caprylylbutyramide,isostearyl caprylyl butyrate amide
DESCRIPTION
What It Does: Provides non-greasy film-forming emolliency for long-wear performance.
Why It's Used: A bifunctional molecule combining isostearoyl ester (branched c18, emolliency) with a caprylyl (c8) butyramide group (film forming, amide stability); used in long-wear formulas.
How It Works: Branched isostearoyl group prevents crystallization and provides non-greasy emolliency; amide group provides stability and film-forming capability; c8 caprylyl linker provides spreading.
Typically Found In: Long-wear foundations,color cosmetics,film-forming skin care
TECHNICAL DETAILS
Primary Category: Functional ingredient – emollient
Secondary Functions: Film forming,skin conditioning
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.5%–5%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Isostearic acid synthetic; butyramide synthetic; specialty specialty amide-ester.
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,waxes,film formers
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Specialty amide-ester molecules provide unique combinations of emolliency (ester group) and stability/film-forming (amide group); used in premium long-wear formulations.
Last Verified: 2026-03-28
Primary Sources: Cosing database,inci dictionary