4-Butylresorcinol

4-Butylresorcinol is a substituted resorcinol used as a cosmetic brightening active. It interacts with tyrosinase and is also associated with inhibition of TRP-1-related pigment formation, giving it a defined role in formulations targeting uneven-looking tone. The molecule’s butyl substituent differentiates it from resorcinol itself and from phenylethyl resorcinol.

The powder is incorporated through compatible solvent or solubilizing systems. Its distribution through the vehicle is relevant to uniform delivery, and maintaining solubility after dilution and cooling helps prevent separation as crystals. The ingredient can be combined with other cosmetic actives while remaining the defined resorcinol-derived input in the brightening system. The carrier and emulsion structure provide the separate texture and moisturizing functions.

Typical Applications

• Dark-spot appearance serums: Used as a targeted active in facial serums developed for visible dark spots and uneven pigmentation. A compatible vehicle carries the ingredient in a uniform leave-on film.
• Tone-evening creams: Used in face or body emulsions where a resorcinol-derived brightening active is selected. The surrounding cream provides moisturization and application texture while 4-butylresorcinol supplies the pigment-focused contribution.

Specifications

Specifications describe the standard grade. Tolerance, test method and documentation package are confirmed per order.