Star Ingredients filler-a100 Penetrates The Fiber Core And Thickens , As Well As Immediately Conditions And Resurfaces Hair Fiber. Only L’oréal Professionnel Owns The Patented Filler-a100 Molecule. amino Acid Strengthens And Renews Lengths. key Ingredients aqua / Water / Eau , Cetyl Alcohol , Cetearyl Alcohol , Cetyl Esters , Amodimethicone , Behentrimonium Methosulfate , Phenoxyethanol , Quaternium-33 , Arginine , Panthenol , Lactic Acid , Behentrimonium Chloride , Trideceth-6 , Benzyl Salicylate , Benzyl Alcohol , Linalool , Isopropyl Alcohol , Serine , Cetrimonium Chloride , Limonene , Aminopropyl Triethoxysilane , Hydroxycitronellal , Citronellol , Alpha-isomethyl Ionone , Polyquaternium-6 , Parfum.