When it comes to the basics of washing hair (how often and with what), the messages are mixed. Some women swear by twice a week, saying the reduced heat styling keeps their hair in tip-top shape, but others lather and rinse far more frequently. “Your hair goes to all the same places and attracts all the same pollutants as your face,” says Kingsley. “It only makes sense then that it should demand the same daily care.” And as an extension of the skin on your face, your scalp deserves the same attention. If you’re prone to overactive sebaceous glands, it’s likely your scalp also produces excess oil and requires more regular washing. Look for a gentle shampoo containing salicylic acid, such as La Roche-posay Kerium Shampoo, which blends the exfoliating ingredient with the brand’s renowned thermal spring water for added soothing. If dry, dehydrated or reactive skin is your key complaint, you’ll require a nourishing cleanser with added humectants. Lather up with Liz Earle Botanical Shine Shampoo. Its naturally derived cleansers work alongside extracts of apple, orange and shea butter to clean, hydrate and soften without stripping.