History
to the ancient Egyptians for the practice of exfoliation.[2][3] In the Middle Ages, wine was used as a chemical exfoliant, with tartaric acid as the active agent.[2] In Asia, the practice of exfoliation started hundreds of years ago.[4] The etymology of the word exfoliate comes from the Latin exfoliare (to strip of leaves).[5]
Importance
New skin cells are created in the skin's lower layer, the dermis. Over time, cells migrate to the surface of the skin and become more acidic. During their 30 day journey,[6] they die and become saturated with keratin. Keratin is important because it protects the skin from outside elements. Through the ageing process, and after menopause for women, the natural process of skin erosion becomes uneven, which gives skin a dry and rough character. Exfoliation removes the outer layer to reveal the newer skin beneath. This shedding of the outer layer unclogs pores, keeps skin clean, and helps reduce acne breakouts. Exfoliation should always be done after cleansing the skin. Exfoliation is important for men as it exposes the hair follicles, allowing a better shave. It is possible to over exfoliate, which dries and irritates the skin. The face is the part of the body most sensitive to exfoliation.[7] Hence, provided that exfoliating causes the skin to dry out, it is very important to moisturize it, because dry skin can lead to wrinkle development
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