Dr. Miracle's Damaged Hair Medicated Treatment is our deep conditioning, medicated treatment, rich in essential oils, proteins, anti-inflammatories, amino acids and anti-oxidants. After washing with the 2-in-1 Tingling Shampoo and Conditioner, apply a generous amount throughout the hair especially focusing on the ends and the scalp. Leave on at least 5 to 15 minutes, or up to 40 minutes if used with heat, to increase penetration of the hair shaft. Then, thoroughly rinse the hair.