Bioline Redactor Brush advanced hair care product has anti-frizz properties to reduce volume, repair damaged hair, and coat and straighten hair. Formulated with Keratin and Collagen, it has an exclusive Intensive Repair Technology that aims to restore nutrients and restore the hair fiber and also has moisturizing and hair softening properties, giving you soft, coated, smooth and vibrant hair. How to use: Used on clean and dry hair with the help of a brush, apply the product half a centimeter from the roots, strand by strand by running a fine comb for better distribution of the product (about 3 grams per strand). Leave it for about 20 minutes on dyed or severely damaged hair and 50 minutes on coarse hair