As skin ages, it loses its natural elasticity and becomes thinner, more fragile and laxer, taking on a wrinkled appearance. The aging process of the skin generally has two kinds of forms: natural aging and light aging. The former mainly refers to the growth with the age, aging from within the body caused by such as genetic, gravity, endocrine and immune function of irresistible factors; while the latter is mainly due to the role of ultraviolet light, a series of changes in the weather and environmental pollution etc.
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