How often should you wash your hair?
There is no single schedule that works for everyone. Dermatologists recommend washing according to your scalp’s oiliness, hair texture, and whether your scalp becomes dirty, itchy, or flaky. (American Academy of Dermatology)
🧴 A practical guide
- Oily scalp / fine, straight hair: daily or every other day may be appropriate.
- Normal scalp: every 2–3 days is reasonable for many people.
- Dry, thick, curly, or coily hair: wash when needed; it may be considerably less frequent. The American Academy of Dermatology says some textured hair may only need shampooing every 2–3 weeks. (American Academy of Dermatology)
- Dandruff or seborrheic dermatitis: regular washing and an appropriate dandruff shampoo can actually help; the frequency depends on your hair type and the specific product. (American Academy of Dermatology)
👵 What changes as you get older?
Scalp oil production generally decreases with age, so some older adults naturally need to shampoo less often. But there is no rule that you should stop washing frequently if your scalp is oily or you exercise and sweat. (newswise.com)
The right way to shampoo
Apply shampoo primarily to the scalp, where oil, dead skin and product buildup accumulate, rather than aggressively scrubbing the entire length of the hair. Follow with conditioner, especially if your hair is dry or prone to breakage.
Bottom line: Don’t follow a rigid “once a week” or “every day” rule. Wash when your scalp needs it. If it becomes oily, itchy, smelly, or flaky, you may need to wash more frequently; if your hair becomes dry and brittle, you may need to reduce washing or change products.
