What It IsThe Lengths Renewing Mask is the perfect treatment for long hair suffering from thinned ends. What It Does Reduces the appearance of split ends by 31%.* Filler A-100 has a high concentration of patented filling molecule to thicken and resurface the hair fiber. The Amino Acid strengthens and renews lengths. *When used with Pro Longer Shampoo + Pro Longer Masque versus unwashed hair. How To Shampoo with Serie Expert Pro Longer Shampoo. Apply Masque on towel-dried lengths. Leave in 3 to 5 minutes. Rinse out. Treat with Renewing Cream for Lengths & Ends PRO TIP: Once a week, have your clients replace their Lengths Renewing Masque with the Ends Filler Concentrate to durably fill and thicken ends. IngredientsAqua / Water / Eau, Cetearyl Alcohol, Amodimethicone, Hydroxypropyl Starch Phosphate, Isopropyl Myristate, Behentrimonium Chloride, Phenoxyethanol, Trideceth-5, Isopropyl Alcohol, Trideceth-6, Glycerin, Caprylyl Glycol, Arginine, Panthenol, Trideceth-10, Lactic Acid, Cetrimonium Chloride, Benzyl Salicylate, Benzyl Alcohol, Linalool, Limonene, Acetic Acid, Hydroxycitronellal, Citronellol, Aminopropyl Triethoxysilane, Alpha-isomethyl Ionone, Polyquaternium-6, Parfum / Fragrance. C241158/1.