How Often Should You Wash Your Hair, Really?
Eight questions to ask yourself before you shampoo
"Hair should also always be shampooed after exercising," Kingsley says. "As we sweat, more oil and bacteria can build up on the scalp."
Letting oil and sweat linger between shampoos can cause side effects like irritation, bacteria growth and foul odors -- and worse, according to Blaisure. "I have seen many people with hair loss who do not shampoo often," she says. "Oil and bacteria buildup can cause scalp problems, which can lead to inflammation in the skin, which then becomes a factor for those who experience hair loss."
People who live in cold climates (or amid constant A/C) and don't sweat on the regular can shampoo less frequently. "These individuals tend to shampoo less, but that is not always necessary," Fusco says. "A shampoo which is hydrating and nourishing" is fine for every day. Try: Briogeo Blossom & Bloom Ginseng + Biotin Volumizing Shampoo, $24.
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