The exact cause of dandruff is not known, but your hormone levels, a weakened immune system, nutrient deficiency, or problems with your nervous system may play a part in its appearance. Arthur Heun, MD, of the Department of Dermatology at UPMC, says causes of dandruff can include:
Stress
Fatigue
Weather extremes
Oily Skin
Use of certain lotions
“If you notice redness or peeling, avoid lotions and other skin and hair care products with alcohol, as these may cause stinging or worsen redness,” he says. “Use caution when your skin is exposed to the sun, try to incorporate more zinc in your diet, and drink plenty of water.”