If your hair isn’t dry or oily or damaged by chemical treatments, consider yourself lucky. “Normal hair usually means a healthier scalp,” says New York City hairstylist Julie Lin. Maintenance: You can wash your hair up to five times a week if needed.

“A basic shampoo and conditioner, even a two-in-one, is fine,” says Marianne O’Donoghue, an associate professor of dermatology at Rush Medical Center, in Chicago. You don’t want to disrupt the hair’s natural balance by using products for dryness or an oily scalp.

CNN.com