Skin aging process is affected by two main factors, which are the natural process in the body as well as environmental factors. Among the environmental factors that may affect skin structure are sunlight, smoke and exposure to certain chemicals. Continuous exposure to direct sunlight is the main cause of premature aging of the skin. Skin aging signs can usually be seen with the presence of fine lines or wrinkles, rough surface, pigmentation as well as uneven tones of the skin.
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