System Professional Liquid Hair 

Liquid Hair instantly strengthens hair prone to breakage. Strengthens fine, brittle hair. Improves hair texture for up to 5 washes.

Aqua/Water/Eau, Propylene Glycol, Behentrimonium Chloride, Cetrimonium Chloride, Amodimethicone, Isopropyl Alcohol, Quaternium-80, Panthenol, Methylparaben, Trideceth-12, Phenoxyethanol, Alanine, Histidine, Parfum/Fragrance, Disodium EDTA, Citric Acid, Benzyl Salicylate, Limonene, Alpha-Isomethyl Ionone, Hexyl Cinnamal, Hydrolyzed Keratin, Sorbic Acid.

Once or twice a week, massage a hazelnut-sized amount of the hair serum into the ends of towel-dried hair and, if necessary, along the entire length of the hair (the amount specified is suitable for medium-length hair)—do not rinse.