All exfoliants can be categorized into one of two camps: physical exfoliants, characterized by a grainy consistency and the ability to physically slough off dead, flaky skin, and chemical exfoliants, which contain a combination of acids and enzymes that gently break down dead skin, excess
oil, and product
buildup at the skin's
surface.
Always concerned with
surfaces, Schnabel's works of the mid - and late seventies are characterized by a
buildup of
oil, wax and plaster, influenced by Johns and Brice Marden.