We totally understand that there’s just something super relaxing and refreshing about that squeaky-clean, post-shampoo feeling, so it’s not surprising that many women wash their hair every day. However, washing every day, as many of us do, is overkill as your hair is not dirty and over washing will stimulate the your hair glands to produce more oil, making it more greasy.

Think of washing your hair like washing your face: It’s a necessary part of your beauty routine, but overdoing it can unintentionally upset your body’s natural balance of healthy oils that help moisturize. The natural oils are so good for the hair and if the hair is washed too often, it can cause an imbalance,” said Kérastase celebrity hairstylist, Matt Fugate.

Washing your hair too often can make the hair dry and brittle and lead to irritation of the scalp,” said Dr. Joshua Zeichner, director of cosmetic and clinical research at Mount Sinai Hospital's department of dermatology.

When hair is wet, it swells up, making it more vulnerable, according to Perry Romanowski, a cosmetic chemist who co-founded the website The Beauty Brains: “The process of moving shampoo or conditioner around in your hair can damage the hair cuticle (the outer layer). When the hair dries, it doesn't lay perfectly flat so that makes hair look dull, makes it harder to comb and increases the chances of getting a split hair.”

When you do use shampoo, look for ones that include scalp-friendly ingredients. People often think they’re just washing the hair, but really it’s as much a skincare regimen (for the scalp) as it as a hair care one.