Apply Dr.G Scalp Lab Cool Salt Scaling Shampoo to a well-wet scalp and hair, gently massaging with your fingertips to dissolve the salt grains and lift sebum, dandruff, and impurities. Leave on for 1 to 2 minutes to enjoy the refreshing purifying effect, then rinse thoroughly with lukewarm water. Use 1 to 2 times a week as a “deep clean” scalp treatment, alternating with your regular shampoo if needed.