FOR COLOURED HAIR WITH PROGRESSED THINNING What is it:  System Kit 4 is designed for natural, untreated hair with progressed thinning. Clinically and dermatologically tested. Why you'll love it:  It helps to refresh the scalp and increase the volume of every strand, leaving your hair looking fuller and thicker. Featured ingredients:  Delivers essential nutrients and antioxidants to the scalp, nourishing and protecting it against damage. This treatment contains UV protecting ingredients for the scalp and hair. KEY BENEFITS & REAL RESULTS THICKENS THE HAIR:  clinically designed to add thickness and fullness to dry, damaged, color-treated hair with progressed thinning, with visible results in just 30 days SUPPORTS SCALP HEALTH:  gently cleanses the scalp, removing impurities and excess sebum that can clog hair follicles, creating a healthier environment for the scalp REDUCES HAIR THINNING:  helps minimize hair breakage, promoting the appearance of fuller, thicker hair while protecting the hair colour NOURISHES THE SCALP:  infused with antioxidants and UV protecting ingredients, this treatment can nourish and revitalize the scalp, improving its overall health and condition 85%  of consumers noticed a thickening effect with our hair thickening products 80%  noticed an increase in hair density 80%  noticed an increase in hair fullness Use Shake Nioxin Leave-In Treatment well and apply directly to the entire scalp, focusing on areas of irritation or discomfort. Gently massage and comb through. Do not rinse. For best results, use in conjunction with Nioxin System 4 Shampoo and Conditioner. Ingredients Aqua/Water/Eau, Niacinamide, Phenylbenzimidazole Sulfonic Acid, Caffeine, Polysorbate 20, Benzophenone-4, Phenoxyethanol, Sodium Benzoate, PEG-12 Dimethicone, Benzyl Alcohol, Sodium Hydroxide, Cocamidopropyl Betaine, Acetamide MEA, Tetrasodium EDTA, Propylene Glycol, Methyl Nicotinate, Mentha Arvensis Leaf Oil, Parfum/Fragrance, Polysorbate 80, Polysorbate 60, PEG-23M, Mentha Piperita (Peppermint) Oil, Limonene, Camellia Sinensis Leaf Extract, Cystine Bis-PG-Propyl Silanetriol, Lecithin, Tocopheryl Acetate, Biotin, Foeniculum Vulgare (Fennel) Fruit Extract, Silica, Citrus Limon (Lemon) Peel Extract, Saccharum Officinarum/Sugar Cane Extract/Extrait de canne à sucre, Acer Saccharum (Sugar Maple) Extract, Vaccinium Myrtillus Leaf Extract, Citric Acid, Faex Extract/Yeast Extract/Extrait de levure, Propylparaben, Citrus Aurantium Dulcis (Orange) Fruit Extract, Maltodextrin, Methylparaben, Potassium Sorbate, Ethylparaben, Butylparaben, BHT.