Is it bad to wash your hair every day?

When to avoid daily shampooing

Not all hair textures can tolerate a daily wash, Ingleton says, including curly or coily hair, which may dry out, become brittle or break if washed daily or even every couple of days. If you’re Black, the American Academy of Dermatology recommends washing your hair every week or every other week.

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Dr. Shereene Idriss, a dermatologist and founder of Idriss Dermatology in New York City, has stricter recommendations for washing, regardless of how fine or oily hair is.

“When it comes to your scalp health, I do not regularly recommend washing your hair every day,” Idriss says, adding that it could lead “to irritation, inflammation and other scalp problems”.

Chemical treatments such as hair dyes and relaxers can make the hair shaft more prone to damage, Alam says. He recommends washing chemically treated hair two to three times a week.

Certain medications like statins, antihistamines and diuretics may also increase skin and scalp dryness, Alam says. If you take them, he adds, wash your hair with a gentle shampoo that contains moisturizers to prevent dryness and irritation.

It can also be helpful to use shampoo with warm instead of hot water, since lathering with hot water can remove too much oil from the scalp, Alam says.

“While it may seem that getting the scalp squeaky clean and without any oils is optimal, keep in mind that the scalp is a living part of your body and not a dinner plate in your dishwasher,” Alam says.

Age can also dictate your shampooing schedule, Alam says. Sebum production is typically slow during early childhood, goes into overdrive during puberty, levels out during adulthood and slows down gradually after age 70. So if you are older, your scalp might be drier, and it may not require a daily scrub.

What to do if you exercise regularly

If you habitually work out and you’re an excessive sweater, Alam says, the salt from sweat can clog your pores and hair follicles. That may require a daily wash or rinse “to clean out the salt and secretions,” he says. “If you do not at least rinse your hair afterward, you can get inflammation of your hair follicles, which is called folliculitis, and pimples on your scalp”.

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This becomes even more important if you have oily hair, Idriss says. You may need to wash it every day, she added, but you don’t always need to use shampoo.

“Alternating a shampoo wash with a water rinse every other day can help minimise stripping your scalp of oil,” Idriss says. And drenching your hair with plain water, she adds, “can be enough to get you to the next day”.

If you just can’t skip the shampoo, Idriss says, opt for a mild formula that has “sulfate-free” or “gentle” claims on the label, and avoid hot water and excessive scrubbing, both of which can irritate the scalp.

As for drying, Alam recommends air drying whenever possible, “which is the least traumatic for your hair”.

If you wash your hair every day and your scalp is not irritated, your hair isn’t dry or brittle, and you are not losing any hair, Alam says, “then keep doing what you are doing”.

This article originally appeared in The New York Times.

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