Shampooing too often strips your hair of sebum, the natural oils produced by your scalp. Sebum helps protect your strands from moisture loss. Washing it all away can lead to a tight, dry scalp and dry, coarse strands prone to breakage.
When to wash. Rossi generally tells his patients they should wash their hair once or twice per week. But if you've had chemical treatments that can make your hair drier — such as bleach, perms or relaxers — you might want to wash it less than once weekly to avoid breaking or brittle hair or split ends, he said.
People with oily hair or who use hair care products daily should consider washing their hair once every 1–2 days. People with dry hair can wash their hair less frequently. Those with textured or coily hair should only wash it once every 1–2 weeks.
Are you washing your hair too much? Shampoo is designed to clean the scalp and remove excess oil. But if it's overused or if you work it all the way down the length of your hair, shampoo can damage your hair. Shampoo strips the important oils the scalp produces and can leave the hair and scalp too dry.
You might think it won't hurt, but washing your hair regularly is incredibly important for the health of your hair and scalp. "Shampooing removes sebum or oil that normally coats the hair shaft," says Brendan Camp, MD, a double board-certified dermatologist at MDCS Dermatology in New York.
Everyone's scalp can get a little oily sometimes. But a little oil is OK! Oil (sebum) helps protect and support healthy hair. But an abnormally oily scalp can feel like a problem if it makes your hair feel greasy or dirty all the time.
Hair Washing Frequency and Tips
“I recommend washing your hair two to three times a week,” Dr. Icecreamwala says. “If your hair is dry, you may only want to wash it twice a week. If it is on the oilier side, every other day is recommended.”
"The average individual can typically go 2 to 3 days without shampooing their hair. However, if your hair is visibly oily, you may not want to wait that long," she says. "Usually, you can go longer without washing your hair when your hair is styled up, but no one should ever go more than 14 days."
If you normally wash everyday, it'll take time to get used to washing it less. So start by going an extra day or two in between your normal washes. Rinse your hair with water in between shampoos and try to build up to once a week. When your hair adjusts you'll notice a dramatic difference.
She says it's more important to consider your hair type, texture and amount of oil production you usually experience. “I typically advise patients to keep to a standard hair washing schedule, whether it is three times per week, weekly or once per month, regardless of activity level,” she says.
Q: How often do celebrities wash their hair? Shampoo your hair 1-2 times a week, max. If you go to the gym and sweat, you can rinse the hair and run a light conditioner through the ends, but don't use shampoo.
Those with fine or thin hair, however, may find their hair looks greasy after just one day. It's all to do with the amount of oil your scalp produces, as well as how well your hair can carry that oil.
Lifestyle and diet changes to fix oily hair
Your diet should consist of foods rich in vitamin B, especially B2 and B6. It is believed that these components in your diet can help keep your sebum production in control. So, consider adding foods like leafy vegetables, pulses, and seaweed.
Daily shampooing removes oils that are healthy, to some degree, but a too-oily scalp can nourish fungus that causes seborrhea, a condition that leaves the scalp itchy and scaly. If your scalp is naturally oily or you work out daily, washing once a day may be right for you.
Depending on your hair type, you can wait three to five days between washes, and we've got the scoop on how to survive the process while you're waiting for sebum production to slow down. We'll admit, the first two weeks are the most difficult, but after about week four, you should see a significant difference.
The experts agree: Only a small group needs to shampoo daily, like those with very fine hair, someone who exercises a lot (and sweats), or someone living in very humid place, Goh says. “If you have oily scalp, then daily washing is needed,” she explains.
However, daily showers do not improve your health, could cause skin problems or other health issues — and, importantly, they waste a lot of water. Also, the oils, perfumes, and other additives in shampoos, conditioners, and soaps may cause problems of their own, such as allergic reactions (not to mention their cost).
Air-drying your hair can be a great way to give your locks a much-needed break from heat-styling. However, if your hair is on the thicker and coarser side, it may be best to start with a protective product and use a blow-dryer to keep your hair from absorbing too much moisture and causing breakage.
Not Getting Enough B Vitamins
"A sufficient intake of the B vitamins, particularly of vitamin B2 (riboflavin) and vitamin B6 (pyridoxine), can help combat greasy hair by regulating sebum production," the site explained.
"Although sebum is good for the hair, too much can make your hair look slick and greasy. Common causes of oily hair are unhealthy eating habits, medications, improper hair care, stress, hormonal fluctuations, and change in weather."