4N Butyl Resorcinol (Lumisoul) — Skin Brightening Active

4N Butyl Resorcinol (Lumisoul) is a highly potent skin brightening and depigmentation active used in premium cosmetic formulations. It is one of the most effective tyrosinase inhibitors available, making it a gold-standard ingredient for hyperpigmentation, dark spots, melasma, and uneven skin tone.

Appearance: White to off-white crystalline powder with high purity.

Key Properties:

• INCI Name: 4-Butylresorcinol
• CAS Number: 18979-61-8
• Solubility: Soluble in ethanol, propylene glycol, and most cosmetic solvents
• Recommended Usage Rate: 0.1% – 1.0%
• pH Stability: 4.0 – 7.0

Applications: Serums, brightening creams, spot correctors, toners, eye creams, and anti-aging formulations targeting hyperpigmentation and uneven skin tone.

Functions:

1. Tyrosinase Inhibitor: Blocks melanin synthesis at the source for effective skin brightening.

2. Depigmentation Agent: Reduces appearance of dark spots, melasma, and post-inflammatory hyperpigmentation.

3. Antioxidant: Provides mild antioxidant protection against oxidative stress.

4. Anti-aging Active: Improves overall skin radiance and luminosity with regular use.

❓ Frequently Asked Questions

Q: What is 4N Butyl Resorcinol (Lumisoul)?
A: It is a premium skin brightening active that inhibits tyrosinase enzyme to reduce melanin production, effectively treating dark spots and hyperpigmentation.

Q: What is the recommended usage rate?
A: Typically 0.1% to 1.0% in finished formulations. Start at lower concentrations and adjust based on formulation needs.

Q: How do I dissolve it in formulations?
A: Dissolve in ethanol, propylene glycol, or butylene glycol before adding to the aqueous phase. Avoid high temperatures during incorporation.

Q: Is it suitable for sensitive skin formulations?
A: Yes, at recommended usage rates it is well-tolerated. Always conduct patch testing before use.

Q: Which skin concerns does it target?
A: Hyperpigmentation, melasma, dark spots, post-acne marks, and uneven skin tone.

Q: What is the ideal pH range?
A: Formulate between pH 4.0 – 7.0 for optimal stability and efficacy.