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Ascorbyl Tetraisopalmitate
AKA “183476-82-6, Tetrahexyldecyl ascorbate, Vitamin C tetra-isopalmitate, VC-IP, Oristar THA, Nikkol BV-OSC, BV-OSC, ORISTAR ATIP, NIKKOL VC-IP”
Emollient
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Ingredient Facts
Ascorbyl tetraisopalmitate
AKA: 183476-82-6, Tetrahexyldecyl ascorbate, Vitamin C tetra-isopalmitate, VC-IP, Oristar THA, Nikkol BV-OSC, BV-OSC, ORISTAR ATIP, NIKKOL VC-IP
Emollient · Antioxidant · EWG: 1
Synthetic
Antioxidant
Emollient
Skin Conditioner
Vitamin C
Clean
L-ascorbic acid, tetraisohexadecanoate
Formula
C70H128O10
Mol. Weight
1129.80
CAS #
161436-56-2, 183476-82-6
Form
Liquid
See origin →
Functions
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
A highly lipophilic vitamin C ester developed for improved stability and penetration in oil-based cosmetics, designed to overcome the oxidation issues of unmodified vitamin C.
Skin Types
●all-skin-types, gentle
Best For
Sun Damage
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
ewg-1
medical-approval
pregnancy-nursing-safe
all-shades-safe
Potential Sensitizer
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR