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The ingredient, explained

Hexylresorcinol

Research examined HEXYLRESORCINOL under the stated study conditions.

Antimicrobial
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Ingredient guide

What it is and what it does

4-Hexyl-1‚3-benzenediol

About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗

Antimicrobial
A technical role associated with controlling microorganisms on skin.

Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗

Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.

A closer look

What the research shows

Human topical research

Pigmentation measurements and grading decreased with 1% hexylresorcinol and 2% hydroquinone, with no significant between-treatment difference.

What this does not tell us

32 randomized women, 29 analyzed, 12 weeks and active comparison. A nonsignificant difference alone does not prove equivalence, and there was no vehicle arm.

Sources for this summary. PubMed 36502500 ↗

Research review checked Oct 1, 2026

Read exact local candidate abstracts first; select identity-relevant papers; targeted primary PubMed/publisher searches. This is not an exhaustive systematic review.

Ingredient research is not proof that a product containing this ingredient works.

Read the 1 selected study

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Products containing this ingredient

All 2 products ↗

From the wider catalogue. Linked by the ingredient list, without an efficacy ranking.

Names and identifiers

Registry identity

4-Hexyl-1‚3-benzenediol

INCI name on ingredient lists
HEXYLRESORCINOL
CAS registry number
136-77-6
EC number
205-257-4

Sources for this ingredient record