This shampoo from Phyto combines the effectiveness of an intense treatment and the benefits of a creamy shampoo. Apply onto dry scalp, working section by section. Massage gently to spread evenly and leave on for 5 to 7 minutes. Then work into a lather upon contact with water to transform it into a shampoo with cleansing properties. Use 2 to 3 times a week for 2 weeks.