Aging shapes the face in common, predictable ways. Skin loses elasticity and facial muscles atrophy, resulting in an undesirable loss of volume. These effects can be especially evident in the mid-face, which includes the undereye and cheek area.
Hyaluronic acid is a volumizing, hydrating injectable agent that is often used to fill out the mid-facial region, but the duration of its effects in this area have not previously been rigorously studied… until now
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