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.
Not washing your hair at all isn't recommended by trichologists as it impacts hair health. Your hair sheds between 50 – 100 hairs a day and avoiding washing your hair means these strands will accumulate sebum and dandruff on your scalp.
If they are dry, it's fine to wash it once a week, but once a week at least for hygienic purposes," Dr. Fusco says. (She clarifies that this is because product can build up on the scalp, potentially leading to clogged pores, irritation, or flakes.)
Oils and grime can be trapped, creating odor
When you don't wash your hair, oils may accumulate on your scalp. This can cause odor on the scalp and hair. If you use hair care products, these can also build up on your scalp and create odors, even if the products themselves smell good.
Not washing your hair regularly can make the scalp flaky and lead to dandruff. It will make you feel itchy and you can also get rashes on your scalp. “You can develop major dandruff problem if you don't wash your hair for 1 or 2 weeks,” she warned.
Prolonged periods of not washing can cause cause buildup on the scalp, damaging hair and even impeding its ability to grow, Lamb said. Grime from dirt, oil and hair product can show up within four to six days for people with finer, straighter hair.
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.
Feisal shares that “washing with water alone is like taking a shower without soap—great as a quick refresh, but probably not ideal for most of us to do all of the time. Water will only help rinse the hair's surface of dust and debris, but will not do much else and especially won't 'wash' your hair.”
More volume. A little oil clinging to your hair strands instantly adds volume. Your hair is fluffed out and looks lusher and thicker. From braids to buns or loose locks, your hair will appear fuller when it's a little dirty.
“People with fine hair should be shampooing three to four times a week, and using conditioner only one to two times a week,” he says. Oropeza also emphasizes the importance of how to condition by recommending that we always steer clear of the scalp and stick to the ends.
Yes, you can wet natural hair everyday, and it is actually advised to do so to maintain moisture. Let's be clear though: by wetting your hair, we don't meanwashing it. We simply mean rinsing natural hair either in the shower or spritzing water over your hair.
Kimble says, "It is actually a big myth that dirty hair grows faster than clean hair. Having dirty hair can cause bacteria growth and scalp irritation. The bacteria growth can cause scalp diseases which can in turn cause your hair to fall out or not grow properly."
Narrator: After six months to a year, all that gunk can clog up your hair follicles, which can prevent new hair from growing and, over time, ultimately lead to hair thinning or even hair loss. There's also a risk of your scalp getting infected from all the bacterial buildup.
Dry shampoo isn't meant for cleansing your hair. Dry shampoos disguise dirt and grease on your scalp. They don't work as a replacement for washing your hair. In fact, overusing dry shampoo can result in an itchy, dry scalp.
Cold water is good for hair as it seals the cuticle back up and locks in the moisture from your conditioner. This leaves your hair looking extra hydrated, frizz-free and shiny.
Does washing your hair with cold water make it greasy? Cold water does not make your hair greasy. Rather, it does not eliminate the natural grease from the scalp as effectively as warm water. The best practice is to use warm water with shampoo and conditioner and cold water for a final rinse.
Unlike skin, your hair does not have a built-in purification system. And if you're like me, going multiple days without washing — scalp oils, styling products, dry shampoo and dirt really starts to build up. A gross fact I learned is that sometimes this build up can result in hair gaining 4 percent of its own weight.
It's best to leave hair down while sleeping if possible because this reduces the number of tangles that occur during rest time. If you want to wear your hair down while you sleep, avoid rubbing it against the pillow while you're asleep.
In addition to being good for your scalp, coconut oil also moisturizes your hair. Since it's easily absorbed, it works better than other oils at repairing dry hair. Keep in mind that coconut oil alone may not be effective as a shampoo to cleanse hair, but as a pre-shampoo treatment, it will condition hair.
While washing your hair is another thing entirely, although some people might consider this as 'wetting,' this is the usual process where you use water, shampoo, and other products to wash the hair and keep it free from grease dirt.