Ascorbyl Isostearate
molecular structure · PubChem
AKA: ORISTAR AIS, OLI-2192 ASCORBYL ISOSTEARATE, ASCORBYL ISOSTEARATE [INCI]
Plant-Derived
Skin Conditioner
Vitamin C
Not Clean
Ascorbyl Isostearate is the ester of Ascorbic Acid and isostearic acid
Formula
C24H42O7
Mol. Weight
442.60
CAS #
-
Form
Liquid
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.
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
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR