Ingredients Brightening Hexylresorcinol
63Hr
Tier · Moderate evidence
Brightening · Antioxidant

Hexylresorcinol

INCI: 4-Hexylresorcinol · Also called: 4-Hexylresorcinol, 4-HR

A potent dark-spot fader long favored by dermatologists. Pairs strongly with niacinamide for stubborn discoloration without the irritation of hydroquinone.

For your skin

A potent dark-spot fader long favored by dermatologists. Pairs strongly with niacinamide for stubborn discoloration without the irritation of hydroquinone.

Want the science? Keep reading ↓

Mechanism of action

Resorcinol derivative that competitively inhibits tyrosinase and activates the Nrf2 antioxidant response, addressing both melanogenesis and pigment-driving oxidative stress.

Why we tier this moderate

4 cited papers across 2 countries. The mechanism is well-described and there's at least one controlled trial in the literature, but we tier this Moderate rather than Strong to stay honest about how many specific papers we cite directly.

3
United States
1
International

Cited research

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Wu A, Gabriel V, Burney W, Chambers C, Pan A, Sivamani RK, Prospective, randomized, double-blind clinical study of split-body comparison of topical hydroquinone and hexylresorcinol for skin pigment appearance, Archives of Dermatological Research 2023;315(7):2095-2099 — split-body RCT, 1% hexylresorcinol equivalent to 2% hydroquinone in pigmentation reduction at 4 and 12 weeks

2023Positive — efficacyPMID:36502500View source ↗
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Shariff R et al., Superior even skin tone and anti-ageing benefit of a combination of 4-hexylresorcinol and niacinamide, International Journal of Cosmetic Science 2022;44(1):103-117

2022Positive — efficacyPMID:34958693View source ↗
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Draelos ZD, Diaz I, Cohen A, Mao J, Boyd T, A novel skin brightening topical technology, Journal of Cosmetic Dermatology 2020;19(12):3280-3285 — 12-week clinical trial (n=42) of hexylresorcinol + silymarin + vitamins C/E showed 45% improvement in brightening and improvements in evenness and fine lines

2020Positive — efficacyPMID:32985076View source ↗
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Makino ET, Mehta RC, Banga A, Jain P, Sigler ML, Sonti S, Evaluation of a hydroquinone-free skin brightening product using in vitro inhibition of melanogenesis and clinical reduction of ultraviolet-induced hyperpigmentation, Journal of Drugs in Dermatology 2013;12(3):s16-20

2013Positive — efficacyPMID:23545928View source ↗

Sources: PubMed · KCI · J-Stage · CNKI · Wanfang · SFD · MFDS · Cochrane · SCCS · CIR. Every entry points to a specific document. See methodology for what each outcome label means.