Ingredient guide
Dihydroxyindole (DHI)
INCI name · dihydroxyindole
In short
Dihydroxyindole (DHI) is a melanin precursor used in some gradual self‑tanning formulas. It oxidises on the skin to create a natural‑looking, surface‑level tan tone.
Works forFrom reviewed ingredient data
Best used
Anytime
What it is
Melanin biosynthesis intermediate used in progressive self-tanning formulations; oxidises to eumelanin polymer on skin surface.
Evidence receipt
No linked study yet
No verified study is linked to this exact ingredient and route. The guidance below describes conventional use; it is not evidence of efficacy.
Where it sits
Serums sit after toner and before moisturiser. Thinnest to thickest, water before oil.
- Cleanse
- Tone
- Dihydroxyindole
- Moisturise
- SPF
Also found as
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Check an ingredient listCommon questions
What does DHI do in skincare?
It helps develop a subtle tan-like colour by forming eumelanin on the skin’s surface.
Is DHI safe to use?
It requires careful formulation because it is a reactive pigment precursor, so it’s only used in specific, regulated self‑tanning products.
Who is DHI for?
It’s intended for people looking for a gradual self‑tan rather than a treatment effect.
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Personal guidance, not medical advice.