Physical exfoliation is when we use a grainy substance to physically rub the old skin cells off. Body scrubs are often made from course ingredients like salt, sugar or horse chestnut. For the face I like something more gentle like ground flowers, ground oatmeal or a simple muslin cloth.
Chemical exfoliation is when a fruit acid or milk acid (an alpha-hydroxy acid AHA) is applied to the skin which breaks down the substance holding the dead skin cells to your skin, and allows them to be rinsed away. Because this is an acidic substance, it can cause a tingling or burning sensation when used in high enough concentrations. This process is often called a peel or peeling mask.
When we exfoliate the skin by either process, we reveal a layer of younger, smoother skin cells underneath. This smoother skin texture gives our skin a youthful glow. The effect is temporary, of course, because our skin is constantly producing new cells. So to keep your skin supremely happy, you should exfoliate 1-2x per week to keep that radiant glow.
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