Revox B77 Plex Hair Perfecting Treatment is the third step of the advanced Revox B77 B77 hair reconstruction system. This concentrated professional product has been developed to restore damaged and coloured hair from the inside. Unlike conditioning products, it works by restoring the bonds of the hair fibre, improving texture and protecting the hair structure from breakage. Hair is stronger, shinier and softer from the first use. Protects color and is beneficial for all hair types. - Rebuilds and repairs the hair structure - Reduces breakage - Strengthens hair in depth. How to use Use before shampoo, 1 to 3 times a week on damp, towel-dried hair. 1) Apply a generous amount from the roots to the tips of the hair, spreading it with a comb or with your fingers until the hair is sufficiently and evenly saturated. 2) After 15-20 minutes, rinse with plenty of water.