How about the collagen on the face? According to experts from Guangzhou Strait Plastic Surgery Hospital, collagen exists in human skin, bones, teeth, tendons and other parts, and its main physiological function is to be an adhesive substance of connective tissue. On the skin side, it forms a reticular support with elastic fibers, providing stable and powerful support for the dermis. With the increase of age, the content of human collagen will gradually lose. Therefore, injecting collagen can supplement the deficiency of human collagen, thus alleviating aging. A perfect face is the envy of every beauty lover. Because the growth of wrinkles affects their facial beauty, injecting collagen to remove wrinkles has become a good way for young people.