The aim of a dry shampoo is to cleanse the hair without the need or use of water. There are many different kinds of dry shampoo on the market that use different methods of cleaning hair. It can come in the form of powder or liquid no-rinse shampoo.
Powder Shampoo
This product functions as a dry shampoo by absorbing oil in the hair. The user generally sprinkles the powder on her hair. She then removes excess product by running a comb through her hair. This special powder generally has the consistency of corn starch, and works well at absorbing the oils in hair that can leave it looking greasy or dirty. Most are also fragranced and leave a pleasant scent behind after each application. However, like with all dry shampoos, it does not actually clean hair as well as a wet shampoo. Powder shampoo can also leave a white residue that can leave hair feeling and looking somewhat unpleasant. It works well when removing the aesthetically displeasing oils in the hair. However, it is not considered a long-term solution to hygiene as it doesn't actually rid the hair of any foreign particles.
No-Rinse Shampoo
The second type of dry shampoo is no-rinse shampoo. This is also a way for a user to wash her hair without the implementation of water. This dry shampoo has a very similar consistency to wet shampoo in that the formula is almost soap-like in its nature. However, since it is a dry shampoo, it does not require the user to lather it up. This formula can be lathered by having the user work it into her hair and scalp. Once the shampoo has adequately foamed, the user can wipe the remainder of the product out of her hair with a towel. This type dry shampoo is more effective than powder shampoo. However, it will not replace the use of wet shampoo as a regular hygienic practice.
