Click Here: br br To Read more details about Kiara Collagen Serum Review br br br Does Kiara Collagen Skin Serum Really Work? br br Yes, it does. Collagen is very important to the skin. In fact, 75 percent of the skin is made up of water and collagen. But through the years, as we get older, we lost collagen. The product essentially just helps the skin produce more collagen to keep it elastic, thereby, revitalizing the aging skin.