How Much Should You Wash? For the average person, every other day, or every 2 to 3 days, without washing is generally fine. “There is no blanket recommendation. If hair is visibly oily, scalp is itching, or there's flaking due to dirt,” those are signs it's time to shampoo, Goh says.
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.
"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."
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.
Hair traps moisture, Lamb said, meaning that built-up bacteria on unwashed scalps can start to pick up a mildewy or sour smell after several days or a week, especially if exercise is involved.
Benefits of Skipping a Wash
Washing your hair daily can strip your scalp of its natural microbiome and can cause dryness and inflammation. Over washing can also leave your hair brittle, limp and thin. If you have highlights or colored hair, less water exposure will ensure the color lasts longer.
There's no single right answer to how many days you can get by without washing your hair. This comes down to your lifestyle, hair texture, and hair type. For many, two to three days is the most. However, by day five you should definitely give your strands a good wash.
Washing your hair every day can strip away more oil than it should from your hair, which leaves your hair drier and more likely to break. Washing your hair every day can cause dryness, and that makes your hair much more prone to split ends.
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.
Water-only washing works best with curly, coily, thick, and coarse textures that are prone to dryness. Chambers-Harris recommends following up with a deep conditioning mask or conditioner to seal in moisture after washing the hair with water.
Not washing the hair regularly with shampoo has certain advantages like cost and time saving, reduced exposure to chemicals, and less risk of hair damage. However, it may increase the risk of scalp irritation and infections due to the buildup of sebum, dirt, and sweat.
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.”
Many doctors say a daily shower is fine for most people. (More than that could start to cause skin problems.) But for many people, two to three times a week is enough and may be even better to maintain good health.
“Regardless of how your hair feels, though, don't go longer than 14 days, ever,” Lamb says, who doesn't buy in to the total 'no poo' movement. From a medical perspective, Goh says some of her patients only wash their hair once a week. She says as long as they don't have scalp problems that seems OK.
What Is the No-Poo Method? The no-poo method is a hair-cleansing technique that removes shampoo from the equation, says Geeta Yadav, MD, a dermatologist in Toronto. Instead of using shampoo, followers of the practice use alternatives such as apple cider vinegar, a cleansing conditioner, or just plain water.
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.
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.
What are the signs of healthy hair? Healthy hair strands have a sheen and a luster, little breakage, minimal shedding, are moisture rich (so not dry), reflect light, do not break when brushed, and do not contain dandruff.
Showering every day, she said, is unnecessary. Every two, three or even four days is acceptable as long as you don't stink up the place. She said, generally, the organisms naturally found on her skin protect us from picking up harmful germs.
Generally speaking, older adults may only need to wash their hair around once per week. For seniors who are hesitant to wash with greater frequency, dry shampoos can be effective in the days between wet washing.
A clean, healthy scalp promotes hair growth. The bottom line is that dirty hair does not grow faster than clean hair, so you might as well have a clean scalp and fresh hair.
Using a conditioner every day without washing the hair with shampoo can lead to over-conditioning. Too much conditioner can weigh down your hair and make it look limp and dull. It can also overwhelm fine or thin hair and make it look greasy.