Can be used on dry or damp hair. Distribute the contents of a vial evenly over the scalp & massage slowly, using the fingertips to press gently in circular movements for 10-20 seconds, this is important to aid the absorption of the product and thus stimulate surface microcirculation. After application the product dries quickly, leaving the hair clean & pleasantly perfumed. The product should not be rinsed. For Intensive treatment 1 vial every day for 2 months. For Maintenance 1 vial 2-3 times a week for 2 months. We recommend repeating the treatment at least twice a year.