Herbal powder shampoos are another form of dry shampoo. Shampoos work by applying water and shampoo to the hair. Styling products aside from shampoo and conditioner are many and varied. They can be used to cleanse, such as shampoo, body wash and face cleanser. Medications within a lotion appear to work better than those within a shampoo. Coal tar is used in medicated shampoo, soap and ointment. Their detergent qualities make them useful in soap and shampoo. Capsaicin can also be washed off the skin using soap, shampoo, or other detergents. Toothpaste, shampoo and soap were extremely rare. It is also widely used in liquid and bar soap, shampoo, cosmetics and medicines. In 1971 Flex shampoo and conditioner was introduced. This can be used as a soap, shampoo, and bleach. Clean the World distributes and recycles hygiene supplies such as soap and shampoo. Crews were also provided with rinse-less shampoo and edible toothpaste to save water. Crews are also provided with rinseless shampoo and edible toothpaste to save water.