Ascorbyl (Vitamin C) Tetraisopalmitate
Description
Oil-soluble vitamin C derivative; tyrosinase inhibitor; antioxidant; requires esterase-mediated hydrolysis to release ascorbic acid in skin; brightening active in anhydrous and oil-dominant formulations
Function
Properties
Regulatory Status
CIR safe as used (2022 update). Oil-soluble vitamin C derivative with superior stability shielded from oxidation. Lipophilic with limited systemic exposure. EU unrestricted and Korea MFDS approved functional cosmetic whitening active. Primary concern is allergic contact dermatitis cases; not recommended as primary brightening choice where alternatives with better safety records exist.
No FDA restriction. Allergic contact dermatitis cases published; use with caution. Not recommended as primary brightening active where alternatives with better safety records exist.