N-Hydroxysuccinimide

TL;DR. It is used mainly as a skin-conditioning active in under-eye products, often as part of complexes positioned for the look of dark circles. Its formulation role is not preservation or emulsification, it is a low-level treatment active.

What does N-Hydroxysuccinimide do in a cosmetic formula?

It is used mainly as a skin-conditioning active in under-eye products, often as part of complexes positioned for the look of dark circles. Its formulation role is not preservation or emulsification, it is a low-level treatment active.

Is N-Hydroxysuccinimide clean?

From a clean-beauty perspective, this is a synthetic specialty active with limited consumer-facing controversy and no common major restricted-list profile. The main caveat is irritation potential for the neat raw material, so finished formulas rely on low concentrations and standard safety assessment.

Is N-Hydroxysuccinimide sustainable?

It is generally produced by conventional chemical synthesis rather than direct plant or mineral extraction. It is water soluble and not expected to bioaccumulate significantly, but public cosmetic-specific biodegradation data are limited.

Is N-Hydroxysuccinimide COSMOS-approved?

This ingredient is not a standard COSMOS-permitted input for natural or organic certification. Its Green Chemistry fit is limited because it is a synthetic specialty material with no clear renewable-feedstock or readily biodegradable profile in common cosmetic use.

How does N-Hydroxysuccinimide work chemically?

The molecule is a small water-soluble heterocyclic imide with an N-bound hydroxyl group, valued for targeted active chemistry rather than bulk skin feel. In finished formulas it is typically a low-dose active component in water or glycol phases, and formulators confirm compatibility with pH, oxidizing systems, and peptide-containing blends.

Last updated 2026-05-13