COMBINAL is one of the top-selling hair dyes in the world. Due to the pureness of its formula, without addition of hindering colorants. COMBINAL hair dyes are able to penetrate much deeper into the hair structure, which makes them last longer than other comparable dyes. COMBINAL enhances with maximum color intensity, long lasting shades, glossy shine, and high coverage capacity. Water resistant, and smudge proof. The colors last up to 6 weeks.