The Efficacy and Safety of Hyaluronic Acid Microinjection for Skin Rejuvenation in Vietnam.

Background: Aging is an increasing concern of modern society, particularly facial ageing. In recent years, the microinjection technique has increasingly been emphasised as a skin rejuvenation strategy. Hyaluronic acid (HA) plays an important role in the hydration of the extracellular space and can thus improve skin hydration, firmness and viscoelastic properties.