L’Oreal Professionnel Inoa Developer 20 volume

Available in 20 Vol (6%) for up to 2 levels of lift, tone-on-tone coloring, darkening, or 100% grey coverage; also in 30 Vol (9%) for brighter results. Oil-based ODS technology ensures creamy consistency for smooth mixing (1:1 ratio) and even application without scalp irritation. Leaves hair soft, shiny, and nourished with long-lasting, vibrant color after 35-minute processing.