A lot is determined by the texture of your scalp and the type of hair you have. Shampooing your hair not only removes dirt, grime, and sweat, but it also removes sebum from your scalp. People who have a dry scalp should avoid frequently washing their hair because this can deplete the scalp's natural oils. It is sufficient to do so once or twice per week. Those with normal scalps can wash every other day if the hair appears greasy and there is excess sebum production that needs to be contained, while those with oily scalps can wash every day if the hair appears greasy and there is excess sebum production that needs to be contained. Use a sulphate-free and paraben-free shampoo to avoid harmful chemicals reacting with your hair.