What Is Anti-Aging by S Grogan (9781300401186)

Description - What Is Anti-Aging by S Grogan

First off, there are two types of aging for the skin. There is the intrinsic (internal) aging, which is caused by factors within one's own body, such as genes and body condition; and extrinsic (external) aging, which is caused by factors outside one's body, such as sunlight and lifestyle.

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