4-Butylresorcinol is a derivative of resorcinol widely used in cosmetic formulations for skin brightening and anti-pigmentation。それは効果的に inhibits tyrosinase activity, reduces melanin oxidation, and promotes tyrosinase degradation, helping to improve uneven skin tone and enhance overall radiance.

この有効成分は、 white to off-white powder そして 油とアルコールの両方に溶ける, making it versatile for incorporation into creams, serums, lotions, and other oil- or alcohol-based formulations. With a recommended usage of 0.1–2.2%, it provides efficient brightening effects while maintaining formulation stability.