What kind of formula should I use for problem skin?

The kind of cleanser you should use depends on your skin care needs. People with acne-prone skin should look for a mild cleanser that is non-comedogenic (won't clog pores). People with skin that's showing signs of aging should find products that contain moisturizers (as skin gets drier with age) or gentle exfoliants (that will remove dead cells from the skin's surface to reveal the fresher, younger skin underneath). Those with dry skin should look for mild, moisturizing cleansers that help to keep skin hydrated and prevent stripping.