The Calriol demi-permanente formula delivers color so luminous it reflects. Exclusive SOY4PLEX formula boosts shine up to 65%, and nourishes and smooths hair. The crème demi-permanente hair color is deposit-only and can be used to enhance, deepen or refresh color to eliminate dullness. The no-ammonia formula is gentle enough to be used immediately after relaxing hair. Best for bowl-and-brush application.