ion Thickening Shampoo helps strengthen and improve the appearance of fine or thinning hair. This shampoo is gentle and helps remove impurities while improving the appearance of fine or thinning hair. Safe for color-treated hair. From volumizing to smoothing, moisturizing to color-protecting, Ion shampoos, conditioners, and treatments are formulated to provide impeccable, professional results for all hair types. 100% Vegan. Paraben free. Save for color-treated hair.