Authority source
Safety basis: FDA
FDA
hydroquinone
HQhydroquinone monobenzate
Skin Lightener
Hydroquinone is a chemical that helps lighten skin. It works by blocking the production of melanin, the pigment that gives skin its color.
What it is
Hydroquinone is a synthetic compound that inhibits melanin production in the skin.
Found in
skin whiteners, dark spot correctors, acne treatments
The concern
Prolonged use or high concentrations of hydroquinone may increase the risk of cancer and reproductive issues.
Legal status
Hydroquinone is restricted in the EU and subject to FDA regulations in the US, with maximum concentration limits and warnings for potential health risks.
Moderate Concern
Hydroquinone has been linked to potential health risks, including cancer and reproductive issues, at high concentrations or with prolonged use.
Evidence & sources
Article / explainer
Article / explainer
No highly relevant article explainer found yet.
Community questions
Community questions
Community discussions are not used as safety evidence and no highly relevant discussion is shown for this ingredient.
Related ingredient guides
Compare this ingredient with related ingredients and common alternatives.
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Last updated: June 9, 2026