Question: how often to wash hair with itchy scalp?
Answer: You should aim to wash your hair every 7-10 days using a mild, sulphate-free shampoo. This includes when you have your hair in a protective style. This will ensure that there is no scalp build-up, that you remove enough sebum, and that dirt and dust is gone. Swish was formulated to be gentle enough to use once a week.