System 4 delivers thicker, fuller hair by removing follicle-clogging sebum, fatty acids and environmental residues, while providing moisture balance and color protection. Complete professional thickening treatment for colored hair with progressed thinning. For denser-looking hair and restored moisture balance. Helps remove sebum, fatty acids and other environmental residue. Helps provide hair resilience and control moisture balance. Provides a refreshed scalp environment.

CLEANSER SHAMPOO: Water/Eau Sodium Laureth Sulfate Sodium Lauryl Sulfate Citric Acid Sodium Chloride Ppg-2 Hydroxyethyl Coco/ Isostearamide Sodium Citrate Sodium Xylenesulfonate Sodium Benzoate Salicylic Acid Sodium Hydroxide Tetrasodium Edta Mentha Piperita (Peppermint) Oil Mentha Arvensis Leaf Oil Menthol Trisodium Ethylenediamine Disuccinate Methylparaben Polyquaternium-10 Propylene Glycol Camellia Sinensis Leaf Extract Cystine Bis-Pg-Propyl Silanetriol Biotin Lecithin Niacinamide Panthenol Tocopheryl Acetate Foeniculum Vulgare (Fennel) Fruit Extract Sodium Acetate Isopropyl Alcohol Yellow 5 Yeast Extract/Extrait De Levure Acer Saccharum (Sugar Maple) Extract Citrus Limon (Lemon) Peel Extract Saccharum Officinarum Extract Vaccinium Myrtillus Leaf Extract Blue 1 Citrus Aurantium Dulcis (Orange) Fruit Extract Red 33 Potassium Sorbate. SCALP THERAPY CONDITIONER: Water/Eau Cetyl Alcohol Stearamidopropyl Dimethylamine Stearyl Alcohol Quaternium-18 Phenoxyethanol Benzyl Alcohol Cetearyl Alcohol Hydroxypropyl Guar Bis- Aminopropyl Dimethicone Glyceryl Stearate Oleyl Alcohol Methylparaben Propylparaben Polysorbate 60 Mentha Piperita (Peppermint) Oil Mentha Arvensis Leaf Oil Menthol Edta Hydroxyethylcellulose Citric Acid Propylene Glycol Camellia Sinensis Leaf Extract Cystine Bis-Pg-Propyl Silanetriol Biotin Lecithin Niacinamide Panthenol Tocopheryl Acetate Foeniculum Vulgare (Fennel) Fruit Extract Yeast Extract/Extrait De Levure Acer Saccharum (Sugar Maple) Extract Citrus Limon (Lemon) Peel Extract Saccharum Officinarum Extract Vaccinium Myrtillus Leaf Extract Citrus Aurantium Dulcis (Orange) Fruit Extract Blue 1 Potassium Sorbate Sodium Benzoate. SCALP AND HAIR TREATMENT: Water/Eau Niacinamide Phenylbenzimidazole Sulfonic Acid Caffeine Polysorbate 20 Benzophenone-4 Sodium Hydroxide Benzyl Alcohol Sodium Benzoate Phenoxyethanol Peg-12 Dimethicone Citric Acid Cocamidopropyl Betaine Acetamide Mea Isopropyl C12-15-Pareth-9 Carboxylate Tetrasodium Edta Propylene Glycol Methyl Nicotinate Sodium Chloride Fragrance/Parfum Polysorbate 60 Polysorbate 80 Mentha Piperita (Peppermint) Oil Mentha Arvensis Leaf Oil Menthol Peg-23M Camellia Sinensis Leaf Extract Limonene Cystine Bis-Pg-Propyl Silanetriol Biotin Lecithin Tocopheryl Acetate Foeniculum Vulgare (Fennel) Fruit Extract Silica Yeast Extract/Extrait De Levure Acer Saccharum (Sugar Maple) Extract Citrus Limon (Lemon) Peel Extract Saccharum Officinarum Extract Vaccinium Myrtillus Leaf Extract Citrus Aurantium Dulcis (Orange) Fruit Extract Potassium Sorbate.