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Dermatologist Debunks Hair Washing Misconceptions
1 Aug
Summary
- Washing hair less frequently does not help color-treated hair dryness.
- Dandruff is a yeast overgrowth, not simply dry scalp.
- Females should wash hair at least twice weekly; males daily or every other day.

Dermatologists are actively correcting misconceptions about hair washing, particularly concerning color-treated hair. A common belief, often fueled by online sources and salons, suggests that frequent washing strips hair color and exacerbates dryness. This leads some individuals to wash their hair only once every ten days.
Experts emphasize that dandruff is a condition caused by an overgrowth of the yeast Malassezia, leading to itching, especially when the scalp is not cleaned regularly. They distinguish this from general dryness, which can occur in color-treated hair due to damage to the hair shaft. While bleached hair may feel rougher, this is best addressed with conditioner applied from mid-lengths down, not by neglecting scalp hygiene.
Professionals advocate for regular scalp cleansing, likening the scalp to facial skin that requires frequent washing. Recommendations include washing hair at least twice a week for females and daily or every other day for males. For those experiencing dandruff, the use of medicated shampoos is advised to treat the scalp directly.