The INKEY List 15% Vitamin C + EGF Serum
Updated Nov 8, 2026 · Top Vitamin C Serum for face
Best for Sensitive skin that wants a stable vitamin C and will not get the punch of L-ascorbic acid.
A 15 percent ascorbyl glucoside serum, plus 1 percent of a plant epidermal growth factor. The INKEY List uses this derivative because L-ascorbic acid oxidizes and stings. The glucoside is meant to convert to vitamin C on the skin. It is gentler than Timeless 20 percent and it does not go brown the same way. The brand's own chart calls 10 to 15 percent the useful range and tells you to wear SPF after it. There is no independent lab comparison against a fresh ascorbic acid serum. Pick it if your barrier cannot take the acid. Pick Timeless if you want the form that was in the heat test and your skin can stand it.
What customers like
- Improves skin texture and elasticity
- Noticeable results in a short period
- Suitable for sensitive skin
- Provides hydration and brightness to the skin
- More affordable compared to other EGF products
- Leaves skin feeling soft and regenerated
- Helps in unifying skin tone
- Pleasant consistency color and scent
What customers dislike
- May take several weeks to see significant results
- Some users did not notice any improvements
- Leaves a sticky residue after application
- Product color was dark yellow which was not appealing to some users
- Dose
- 15 percent ascorbyl glucoside
- Also
- 1 percent plant EGF
- Size
- 1 fl oz
- Form
- Stable derivative, not L-ascorbic acid
Sources: The INKEY List: 15 percent ascorbyl glucoside, not L-ascorbic acid · Chemist Confessions: L-ascorbic acid oxidizes; a derivative is a different product
