Snapshot
- Overview
- A stabilizing ingredient sometimes paired with tone-evening actives.
- Category
- Hyperpigmentation, Tone/Texture
- Type
- Chelating Agent
N-Hydroxysuccinimide
N-hydroxysuccinimide is a water-soluble succinimide derivative used in cosmetic chemistry as a chelating and coupling agent, used to improve formula stability and support complexes aimed at uneven tone, though evidence in topical care is limited.
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Our take
Is N-Hydroxysuccinimide a Good Ingredient?
Clinical support for direct skin benefits is limited, and most claims apply only within multi-ingredient complexes, which is why it rates Fair. The potential for irritation, particularly around the eye area, also warrants caution.
What it does
Skin Benefits
May support a more uniform-looking complexion when used within multi-ingredient complexes, especially around the eye area, though standalone skin benefits are not well established in published studies.
Where you'll find it
Uses in Skincare & Cosmetics
Common in eye creams and targeted spot serums formulated for tone concerns. It can also be found in lightweight gel treatments and sheet masks as part of brightening blends.
Before you use it
Safety
May cause stinging or sensitization, especially on thin periorbital skin; patch testing is advisable. No widely recognized topical regulatory restrictions, but avoid using on compromised skin.
Products with N-Hydroxysuccinimide
