The world's first solid purple shampoo bar with Biotin!Safe for blondes, grey & white hair: color-treated, highlighted, & natural.PH balanced and safe for color-treated hairNeutralizes unwanted brassiness and yellow undertones.Why You'll Love This:Enriched with Biotin to boost shine, reduce dullness & strengthen your hairEnjoy smoother, stronger & more vibrant blonde hair after just one use! Free of parabens, phthalates, silicones, sulfates, & artificial fragranceReduces single-use plastic: saves two bottles of liquid shampoo/conditionerMade in the USA with quality ingredients4OCEAN CERTIFIED: For every shampoo or conditioner bar, 4ocean pulls the equivalent of one shampoo bottle’s worth of plastic from the world's oceans, rivers, and coastlines