4-Butylresorcinol
BrighteningAlso known as: Rucinol, 4-n-Butylresorcinol
A potent tyrosinase and TRP-1 inhibitor for treating hyperpigmentation. One of the most effective non-hydroquinone brightening agents.
Routine placement
Serum · AM & PM
Time to results
6-12 weeks for visible brightening and dark spot fading
Potent brightening, inhibits melanin at multiple steps, treats melasma, fades post-inflammatory hyperpigmentation.
Apply in serum form. Typically used at 0.1-0.3%. Can be combined with other brightening ingredients.
Dual inhibition of tyrosinase and TRP-1 makes it one of the most potent topical depigmenting agents. Clinical studies show significant improvement in melasma.
Cautions
Generally well tolerated. Occasional mild irritation possible. Less research than established brighteners like hydroquinone.
What does 4-Butylresorcinol do for skin?
4-Butylresorcinol is used in skincare primarily as a brightening ingredient. Its effects depend on concentration and formulation. Check the benefits section above for specific details.
Is 4-Butylresorcinol safe for sensitive skin?
4-Butylresorcinol is generally well-tolerated, but sensitivity varies by individual. Start with a patch test if you have reactive skin, and introduce gradually into your routine.
Can I use 4-Butylresorcinol every day?
For most skin types, daily use is appropriate at standard concentrations. If you experience any irritation, reduce frequency to every other day.
How long does 4-Butylresorcinol take to fade dark spots?
Most brightening ingredients take 8-12 weeks of consistent daily use to show visible improvement in hyperpigmentation. Results vary by skin tone and spot severity.
Does your skincare contain 4-Butylresorcinol?
Paste your product's ingredient list to check, or create your Skinularity ID for a full routine.
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