Final answer:
Injectable fillers are used for anti-aging purposes, primarily to plump up the skin and reduce the appearance of wrinkles, providing a more youthful look compared to non-invasive rehydration methods.
Step-by-step explanation:
Injectable fillers serve the purpose of anti-aging by addressing skin concerns such as wrinkles and volume loss. These fillers, often consisting of substances like collagen, are used to plump the affected tissue, providing a smoother and more youthful appearance. While some non-invasive products aim to rehydrate the skin to reduce the appearance of wrinkles, injectable fillers offer a more immediate improvement. They are typically made of substances like hyaluronic acid, collagen, or calcium hydroxylapatite. When injected into the skin, these fillers help to plump up the area, smoothing out wrinkles and restoring a more youthful appearance. This method is considered invasive, and unlike BOTOX injections, which paralyze the muscles to prevent skin creasing, fillers physically fill the spaces causing the wrinkles.