Grey Coverage Developer

L'Oréal Professionnel Dia Activateur II is a 15 volume (4.5%) cream developer specifically formulated for use with the Dia Color, Dia Light, and Dia Richesse demi-permanent color lines . This professional-grade developer is the ideal choice for services requiring richer, more intense color results, including up to 70% grey coverage, tone-on-tone coloring, and creating visible tones in darker hair bases .

The cream formulation allows for an even and easy mixture, providing consistent and uniform color results with a radiant, glossy finish . The higher 15 volume concentration is specifically recommended for grey coverage (up to 70% white hair when used with Dia Richesse) and for achieving richer reflects in darker hair bases . The developer caters to all technical applications including virgin hair coloring, toning, lowlights, color refreshing, and fashion results .

This gentle formula is free from ammonia, formaldehyde, and common allergy-causing preservatives, making it suitable for use on natural, color-treated, or chemically processed hair . The 1L professional size is designed for salon use, offering exceptional value for frequent demi-permanent color, toning, and glossing services .

This product is intended for professional use only and should not be used at home . To use, mix with Dia Light, Dia Richesse, or Dia Color at a 1:1.5 ratio (50ml color + 75ml developer) in a non-metallic bowl . Apply to clean, dry hair using the technique appropriate for desired results, process for 2-20 minutes depending on service type, then emulsify, rinse thoroughly, and follow with a post-color shampoo .