Protein hair treatment that strengthens the hair, reduces damage and improves elasticity. Does your hair need protein? Damaged hair that needs a protein boost may lose its elasticity or feel rubbery and sticky. Severe breakage and hair loss are other signs of low protein hair. This is where the Protein Repair™ Hair Mask comes in! This protein hair treatment adds protein to your hair strands to reduce split ends and breakage. This balanced, nutrient-rich protein hair mask also provides the hair with powerful antioxidants that protect the hair from future damage. With regular use, this protein hair treatment reduces split ends by up to 20%*. Application: Apply this protein hair treatment after shampooing. Distribute a generous amount of product evenly through towel-dried hair and comb through. Leave it on for 5-10 minutes and then rinse it out. It is also important that a protein hair mask for damaged hair is always followed by a conditioner. We recommend the Split Fix™ conditioner here. For the best results, we recommend applying the Protein Repair™ Hair Mask every two to three weeks, depending on the condition of your hair.