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SESH INGREDIENT FILE

Hydrogen Peroxide

INCI Hydrogen Peroxide

Active Oral Care Active

What it is & what it does

Oxidizing agent used in tooth-whitening products to break down colored compounds on teeth.
WHAT IT IS: Hydrogen peroxide is an oxidizing agent used in some tooth-whitening products rather than as a routine leave-on skincare active.

HOW IT WORKS / WHAT RESEARCH SUPPORTS: In oral applications it helps break down colored molecules responsible for some dental staining. Effect and safety depend on concentration, exposure time and the intended dental formulation. A tooth-whitening ingredient should not be used as a home skin lightener or applied directly to skin because of its irritant potential.

IN A REAL SKINCARE ROUTINE: This page concerns its function in designated oral-care products, not a universal whitening treatment. The visible effect of an ingredient is not necessarily the same as the performance of a finished product.

Usage & cautions

Use only as directed in appropriate dental products. Avoid swallowing, protect gums, and seek dental advice if sensitivity or irritation occurs.
Information approach Consumer-friendly summaries are informed by established cosmetic ingredient references such as INCIDecoder and Paula’s Choice Ingredient Dictionary, while avoiding turning ingredient-level evidence into medical claims about the finished product.