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Ingredient guide
3-o-cetyl ascorbic acid
In short
3‑O‑Cetyl Ascorbic Acid is a lipid‑friendly form of vitamin C designed to stay stable and release slowly in skin. It can support a more even look and smoother texture while being gentler than many water‑based vitamin C options.
Reviewed against published evidence · editorially independent · no brand pays for placement
Works for
Tone · Texture
Skin type
Dry
Best used
Morning
What it is
Ether-bonded lipophilic vitamin C; extreme stability (no oxidation even at 40C/12 months); slow release via esterase cleavage in skin.
Also found as
Related
Common questions
It offers the brightening and smoothing benefits of vitamin C but in a highly stable, slow‑release form. This can help give skin a more even look over time.
Yes. Its lipid‑friendly structure helps it sit comfortably in richer formulas that suit dryness.
It typically appears in serums or creams that focus on radiance and texture. Because it’s very stable, it tends to work well in both day and night products.
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Personal guidance only · For clinical concerns, see a dermatologist.