By the way, doctor: How does Thermage remove wrinkles?
Skin is composed of several layers. The outer layer is the epidermis. Just beneath it is a thicker layer called the dermis. Below the dermis lies a layer of fat, and under that, muscle tissue. The dermis is composed of collagen proteins arranged in parallel layers of fiber called fibrils; these form a matrix that holds skin together. As we age, the fibril layers loosen and become less organized, resulting in sagging skin.
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