what does dry shampoo do

Dry shampoo is a hair care product that absorbs dirt, oil, and grease from the scalp without washing it with water. It is usually applied to the top of the head and other areas of hair that are visibly greasy. Dry shampoo comes in different forms, such as aerosol sprays, powders, and foams. When sprayed into the hair, the alcohol or starch in the product soaks up the excess oil and grease, making it look cleaner and fresher. Dry shampoo can be used to freshen hair after working out, a humid commute, or to extend the life of a blowout. It can also be useful for people with disabilities who have a hard time taking showers without assistance. However, experts say that dry shampoo should not be a full-time substitute for washing hair with water, as it does nothing to clean the scalp, which collects dirt. Overusing dry shampoo can lead to a dry and itchy scalp, and it may leave residue on the scalp that can cause rashes and inflammation. Therefore, it is recommended to use dry shampoo once in a while and not as a full-time substitute for wet shampoo.