If your hair seems brittle and lifeless, you could be a victim of hair over-washing. Comparison of healthy and dandruff scalp microbiome reveals the role of commensals in scalp health. Front Cell Infect Microbiol. Gavazzoni Dias MFR. Pro and contra of cleansing conditioners. Skin Appendage Disord. Cleveland Clinic. The dirty truth about washing your hair. Updated August 14, Thank you [email] for signing up. Please enter a valid email address. Your Privacy Rights.
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People who wear complicated hairstyles or who have very long hair may also prefer to shampoo less often, as less frequent shampoos mean less time spent styling the hair. Washing the hair is a lot like washing skin. Water can remove most visible dirt and debris, but might not eliminate odors or oily deposits. Shampoo helps water remove dirt, debris, and odors, such as smoke or sweat effectively. Shampoos can also remove oil.
The hair gets its oil from sebaceous glands that secrete oil called sebum, which keeps the hair moisturized. Moisturized hair is less likely to break or look dry and frizzy. But too much moisture can make the hair look greasy, limp, and dirty. After several days without shampooing, oil tends to build up closest to the scalp, making any hair around the face look dirty.
Most shampoos are designed to strip excess oil, which helps the hair look cleaner for longer. Shampoo cleans the hair with chemicals called surfactants. These are soaps that remove surface debris from the scalp and hair. Many shampoos also contain compounds called sulfates, which produce a rich lather that removes oil from the hair.
This can help the hair look cleaner, but it can also damage the hair. Keeping at least some oil on the hair is important to protect the hair from damage.
Some people opt to use sulfate-free or moisturizing shampoos to preserve hair health, although there is little evidence that sulfate-free shampoos are less aggressive than regular products. Other people choose to reduce the number of times they wash their hair. Some people even advocate giving up shampoo altogether.
Assessing whether the hair is oily or dry can help someone decide how frequently to shampoo. A person can help determine their hair type by asking:. For most people, there is no medical need to shampoo at all, as rinsing with water can remove dirt and dandruff. However, some health conditions can benefit from regular shampooing.
People with parasitic infections of the scalp, particularly lice, may need to use special shampoos to get rid of the bugs. Scalp psoriasis may improve with the use of special shampoos, particularly tar products or medicated shampoos.
People with specific skin and scalp conditions should discuss their ideal hair care regimen with a dermatologist. By contrast, some medical conditions may get worse with frequent washing. Daily shampooing can irritate eczema , very dry skin, and dandruff.
Et cetera, et cetera, et cetera. He says that a simple rinse is still fine for this. So give it a rinse, apply your hair product, and enjoy your good hair day. When you do use shampoo, look for ones that include scalp-friendly ingredients.
An anti-dandruff shampoo is an obvious place to start, but look instead for ingredients like tea tree oil, too: It stimulates circulation in the scalp, thus it fortifies follicles, promotes growth, and fights hair loss while the shampoo itself rinses away excess build-up. One we like is Dr. One thing you should use daily, however, is conditioner. It re-hydrates the hair and replenishes lost nutrients.
Whereas shampoo strips moisture and nutrients. Farel says conditioner is doubly important if you are growing your hair out. One exception to the daily use is guys with oily scalps. In the same way they need to shampoo every day due to egregious amounts of sebum, this increased oil production also acts as a daily conditioner.
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