How many days can you use dry shampoo?

Dry shampoo is a convenient quick solution for greasy hair, but it is not a replacement for a thorough cleanse. With (daily) use, it can in some people lead to a sensitive or irritated scalp and may make the hair feel heavier or lifeless. This is because dry shampoo absorbs oil but also partially remains on the hair and scalp.

How often you can use it varies depending on hair type and scalp condition, but as a general guideline it is often recommended to limit use to about two to three times per week, and to wash the hair properly with shampoo in between uses.