Dry shampoo can be a helpful tool for extending time between washes and adding volume. However, overuse can lead to product buildup on the scalp, potentially causing dryness and irritation.

Some dry shampoos have been discontinued due to the presence of benzene, a known carcinogen, found in aerosol propellants. Always check product recalls and ingredient lists before using any aerosol dry shampoo.

Dermatologists often recommend dry shampoo for occasional use to maintain scalp health and prevent overwashing. They typically advise against using it as a primary hair cleansing method due to potential scalp irritation and follicle blockage.

Avoid dry shampoo if you have a sensitive or irritated scalp, or if you notice significant product buildup. Also, refrain from using it if you're experiencing hair loss or suspect a scalp condition, and consult a dermatologist instead.