How Long Does Comb In Wash Out Hair Dye Last?
How Long Does Comb In Wash Out Hair Dye Last? Semi-permanent color lasts approximately 4-6 weeks, generally fading out over time (unless you reapply). How long does wash out hair dye last? How long does it last? Most semi-permanent dyes will last between 4-6 weeks, while certain tones like blues and greens may last even