Cleanses & Clarifies Non-staining & safe for all hair – natural or dyed Free of: sulfates, parabens, phthalates, gluten, drying alcohol and artificial colors. Introducing the best kept secret for hair...HASK Purifying Charcoal Shampoo. Charcoal, derived from coconut shells, combined with lemon and grapefruit oils, thoroughly cleanses and clarifies while helping to eliminate impurities from your hair and scalp. Gentle enough for daily use and safe for color-treated hair.