4-n-Butylresorcinol

High-purity 4-n-Butylresorcinol for advanced skin-brightening formulations.
Reliable cosmetic ingredient for whitening, anti-aging, and pigmentation control.
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Introduction

4-n-Butylresorcinol, also known as Rucinol, is a highly effective cosmetic active ingredient widely used in whitening and brightening skincare formulations. As a derivative of resorcinol, it features a butyl group substitution that significantly enhances its activity against melanin formation, making it a premium choice for formulations targeting pigmentation and uneven skin tone.

Uses

• Inhibition of tyrosinase activity to reduce melanin production
• Brightening and evening out skin tone
• Reduction of hyperpigmentation, melasma, age spots, and dark spots
• Formulated in serums, creams, and specialized whitening solutions

Specifications

• CAS No.: 18979-61-8
• Molecular Formula: C₁₀H₁₄O₂
• Molecular Weight: 166.22 g/mol
• Appearance: White to off-white crystalline powder
• Purity: ≥ 99%
• Solubility: Soluble in ethanol, propylene glycol, and cosmetic solvents

Precautions

• For cosmetic use only, not for pharmaceutical applications
• Recommended usage level: 0.1% – 0.5% in skincare formulations
• Avoid direct contact with eyes and mucous membranes
• Conduct a patch test before final product application

Storage

• Store in a cool, dry, and well-ventilated place
• Keep container tightly closed to prevent moisture absorption
• Protect from direct sunlight and high temperature
• Shelf life: 24 months under proper storage conditions