Shower after exercise
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If you're prone to dandruff, it's important to shower shortly after you exercise. Excess sweat allows more oil and dead skin to build up and can exacerbate your symptoms. Krant points out that dandruff can exist anywhere on the body where with sebaceous (oil) glands and hair-bearing skin, so if you're itchy or flaky, grab a shower as soon as you're done working out.