Hyaluronic Acid Declines With Age, According To Researc

With age, the skin goes through structural changes. For example, and quite notoriously, the skin loses collagen starting at some point during the mid-to-late twenties. This decline continues at a rate of about 1% per year1 thereafter. Collagen loss is the root cause of many of the skin concerns commonly associated with aging, such as sagging, loss of firmness, and wrinkles.