Common Name(s): Hydroxyoctacosanyl hydroxystearate,c28 hydroxy fatty alcohol hydroxystearate,carnaubyl hydroxystearate
DESCRIPTION
What It Does: Provides ultra-rich, waxy emolliency and thick texture in luxury skin care and lip products.
Why It's Used: Very long chain c28 hydroxy fatty alcohol esterified with 12-hydroxystearic acid; double hydroxylation (both alcohol and acid have oh groups) creates a bifunctionally polar wax with unique texture.
How It Works: C28 hydroxy fatty alcohol chain provides ultra-long-chain waxy emolliency; 12-hydroxystearate provides a second oh group adding polarity and water-interaction; used as a wax-extender in premium formulations.
Typically Found In: Luxury lip products,rich creams,wax-based formulations,ultra-rich moisturizers
TECHNICAL DETAILS
Primary Category: Functional ingredient โ emollient
Secondary Functions: Viscosity controlling,skin conditioning,wax-type emolliency
Application Areas:
Facial Skincare
Body Care
Hair Care
Beard Care
Color Cosmetics (Makeup)
Dietary/Oral Supplements
Typical Concentration Range: 0.5%โ10%
SOURCING & ETHICS
Vegan Status: Yes
Halal Status: Yes
Source Notes: Very long chain fatty acid/alcohol derivatives; plant or synthetic origin.
SKIN COMPATIBILITY
Irritancy Rating: 1/5 โ very low
Comedogenicity Rating: 1/5 โ low
Sensitivity Concerns: Generally well tolerated.
Safe for Sensitive Skin: Yes
SAFETY & COMPATIBILITY
Safety Profile: Good safety profile. ewg score: 1.
Works Well With: Waxes,plant butters,other long-chain emollients
Avoid Combining With: No significant incompatibilities
SCIENTIFIC NOTE
Hydroxyoctacosanyl hydroxystearate belongs to the family of hydroxy fatty acid esters; the bifunctional hydroxylation (both wax ester components carry oh groups) provides unique hydrogen-bonding network in the solid state, contributing structured wax-like texture.
Last Verified: 2026-03-28
Primary Sources: Cosing database,inci dictionary