Nioxin Derma Purifying System 6 Cleanser Shampoo (Chemically Treated Hair, Progressed Thinning, Color Safe) 1000ml 33.8oz Size:1000ml 33.8oz An ultra refreshing 157577 An ultra refreshing curly hair Enriched with natural Acanthus extract to re define contours of curls Contains Evening Primrose Oil to regenerate hair fiber Builds an anti humidity shield to protect curls against frizz Infused with a delicate floral fruity fragrance Leaves curls soft Step 1 of 3D Care System Kit 6 Specially designed for chemically treated hair with progressed thinning Developed with Pro Color Shield to cleanse scalp for better hair follicle health Removes follicle clogging sebum fatty acids & environmental residues Leaves hair smooth