Bio Keratin Gold Express Brazilian Blow Dry Keratin Water - thanks to its improved and renewed formulation, it is formulated to not only make it applied to the hair in a shorter time, but also to calm curly or wavy hair and keep it straight for 4-6 months. It completely puts an end to your hair's frizz problem and provides permanent straightness and a silky and natural appearance for 4-6 months. It removes the dullness of your dyed and processed hair and adds vitality. With its long-lasting blow-dry effect, it saves you from frequent visits to the hairdresser or blow-drying, and it can be applied easily at home as well as at the hairdresser. TIGHTEN-COMB-STRAIGHTEN! Application: 1: The hair to be treated is first washed with salt-free shampoo and dried. 2: Apply the product to dried hair using a spray until there are no dry areas left and comb your hair with a fine comb. 3: After combing until there is no dry area left, wait for 20-30 minutes. 4: After the waiting period, dry your hair with the help of a blow dryer. 5: Press the dried hair with a 230^ press. 6: The treated hair is washed with salt-free shampoo 15 minutes after the procedure and dried. NOTE: Regular use of salt-free shampoo after application is important for permanence.