JOICO Vero K-Pak Color System- the salon-exclusive color concept with a wide product range of permanent and demi-permanent colors including a revolutionary range for mature hair. VeroGlaze no-lift developer transforms Vero K-PAK permanent creme color into a deposit-only creme color. 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 greys Tones pre-lightened hair