This low pH, no-lift developer transforms JOICO Vero K-Pak Color into a true, tone-on-tone, deposit-only demi-permanent hair color that lasts between four to eight weeks. A no-lift developer with a pH of 2.7 Produces tonal change without lifting the natural hair color Lasts 10 to 15 shampoos depending on porosity of the hair Blends grey Tones pre-lightened hairA gentle crème developer formulated with Squalane, a moisture binding component to help maintain the integrity of the hair structure throughout the coloring process and leaving hair in optimum condition.Compatible with Joico VeroLight, and all Joico Vero K-Pak Color shades (including Joico Vero K-Pak Color Age Defy), toners and high lifts.A no-lift developer with a pH of 2.7Produces tonal change without lifting the natural hair colorLasts 10 to 15 shampoos depending on porosity of the hairBlends greyTones pre-lightened hair