American Crew Classic Precision Blend Developer 4 5% / 15 Vol. 500ml

American Crew Classic Precision Blend Developer 4% (15 Vol.) in a 500 ml bottle is a professional-grade oxidizing agent formulated to activate color pigments in oxidative hair color systems. This 4% hydrogen peroxide developer provides controlled lift and predictable results when paired with compatible color formulations.

Designed for the Precision Blend line, this developer offers a generous 500 ml supply that is suitable for salon use and personal color routines. The 15 volume (4%) formulation balances pigment deposition with lift to help achieve even tone and consistent coverage across the hair mass.

• Size: 500 ml bottle
• Concentration: 4% / 15 volume hydrogen peroxide
• Use: developer for oxidative hair color formulations
• Compatibility: designed for Precision Blend color formulations
• Brand: American Crew