Brand from United States: OLAPLEX. This powerful, clinically proven pre-shampoo treatment leaves hair 3X stronger after just one use. No. 3 is the complete bond builder to repair and strengthen hair at home by rebuilding all 3 hair bonds. Formulated for all hair types and all levels of hair health, this weekly treatment is key for your healthiest-looking hair. How to use: Apply to wet hair from roots to ends, leave for 10 minutes and rinse. Use it once a week or two or three times a week. An award winning strengthening and protecting treatment for all hair types. The Olaplex No. 3 Hair Perfector is formulated to strengthen, support and repair all types of hair. Containing the active ingredient found in previous No.1 and No.2 Olaplex hair products, this is the ideal salon standard hair care treatment which will allow you to maintain healthy hair from the comfort of your own home. Benefits: Leading, salon grade formula. Strengthens and protects the hair structure. Restores healthy appearance and texture. Alcohol & Sulphate Free. How to Use: Use 1x per week, for damaged hair 2-3x per week. Apply through towel-dried hair from root to end. Leave for 10 mins. Rinse through hair, apply shampoo & conditioner.