Semi Color Activator is crafted specifically to complement root taps, shadow root applications, low-lighting, and regrowth touch-ups when paired with Semi Color. It's perfect for achieving subtle, tone-on-tone results without lifting. This versatile activator is ideal for various color applications, including toning, refreshing, grey blending, color balance adjustments, going darker, filling, or lowlighting. Infused with 2.25% (7.5 vol.) hydrogen peroxide, it ensures stable and reliable color results with every use.