Tap water alone will only remove around 65% of the dirt and oil on your skin. Thats why skin cleansers were created. They work as emulsifiers to remove dirt, natural skin oils (called sebum), bacteria, cosmetics and exfoliated surface skin cells. You may want to even consider using toners, which are effective in removing any excess oil and residue left on the skin after cleansing; toners also prepare a clean surface for application of a moisturizer. To get the most out of your cleansing products, choose ones that are appropriate for your skin type, such as oily, dry or normal. New foaming mousse cleansers offer gentle, yet deep cleansing that can invigorate your skin.