Ascorbyl Isostearate
AKA “ORISTAR AIS, OLI-2192 ASCORBYL ISOSTEARATE, RefChem:199636, ASCORBYL ISOSTEARATE [INCI]”
Vitamin
Ingredient Facts
Ascorbyl isostearate
AKA: ORISTAR AIS, OLI-2192 ASCORBYL ISOSTEARATE, RefChem:199636, ASCORBYL ISOSTEARATE [INCI]
Vitamin · Antioxidant · EWG: 4
Plant-Derived Synthetic
Antioxidant
Emollient
Skin Conditioner
Vitamin C
Vitamin
Clean
A stabilized form of vitamin C that conditions and softens skin while supporting a smooth, healthy complexion.
Formula
C24H42O7
Mol. Weight
442.60
CAS #
-
Form
Liquid
See origin →
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Locks in moisture
Traditional Use
Synthesized as a lipophilic vitamin C ester in the late 20th century to enhance penetration and stability of vitamin C in oil-based or occlusive skincare products.
Skin Types
●all-skin-types
Best For
Sun Damage
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR