is dry shampoo dandruff
The disgusting truth about dry shampoo: How over-using this bad hair day saviour can cause dandruff, scalp pimples and even CYSTS. 1  Hair experts warn that using too much dry shampoo can be harmful. 2  Overuse can lead to dandruff and interfere with styling hair. 3  More severe side effects include scalp pimples and cysts.