Recommended use: apply after hair wash Apply the treatment to freshly shampooed, damp hair. Turn the nozzle on and gently massage AHA Scalp Detox into the scalp. Leave on for 3-5 minutes and then rinse thoroughly. Continue with a hair mask and finish with conditioner for a complete and nourishing hair care routine. This option is particularly suitable if you have a lot of product residue in your hair; such as wax, gel and mousse. By first removing the product residue, you allow AHA scalp detox to provide the best possible effect. Alternative treatment: apply before hair wash Apply the treatment to a dry scalp before hair wash. Turn the nozzle on and massage AHA Scalp Detox evenly into the scalp. Leave on for 3-5 minutes and rinse thoroughly. Then wash your hair with shampoo and finish with a hair mask and conditioner for best results.