flakes in hair is it dandruff and how white piedra vs dandruff causes and white build up on scalp white piedra what it is how you get white build up on scalp scalp build up and white flaky stuff hair buildup from shoo white buildup on scalp how to remove wet dandruff what it is and how to get hair buildup from shoo remove hair build up naturally white stuff in hair after washing my nails when i scratch the scalp