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The natural cycle of skin cell renewal is 28 days. If your skin maintains this cycle, it makes it youthful-looking and lively.
However, when this cycle slows down due to age, ultraviolet rays, stress, etc., dead skin cells stays on the surface of the skin, giving the appearance of dull skin.
In order to maintain the clarity of the skin, it is important to keep the cycle of skin renewal healthy.
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