No skin-suitability flags for hydroquinone in our reference data. It is commonly flagged for caution in pregnancy — confirm with your own doctor.
Hydroquinone is a topical depigmenting agent that inhibits tyrosinase, reducing melanin production. It is used to treat hyperpigmentation conditions such as melasma, post-inflammatory hyperpigmentation, and dark spots.
| Reported effect | How often | Notes |
|---|---|---|
Skin irritation (erythema, stinging, dryness) | Common | Mild and transient, often early in treatment, more likely at higher concentrations. |
Contact dermatitis | Uncommon | Irritant or allergic; may require discontinuation. |
Temporary skin redness or burning | Common | Especially with sun exposure or sensitive skin. |
Exogenous ochronosis | Rare | Bluish-black pigmentation from prolonged high-concentration use; more reported in darker skin types. |
Nail discoloration | Rare | Reversible brownish staining of nails with contact. |
Paradoxical hyperpigmentation | Rare | Worsening of pigmentation with misuse or prolonged use. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
Peer-reviewed papers on this ingredient, via PubMed.