Collagen stimulators are different from other dermal fillers as the active ingredient works to stimulate the body’s collagen production to restore facial volume and improve the skin’s structure. These products last longer than hyaluronic fillers – up to 2 years. Sculptra is called “the secret” and is perfect for someone who wants a younger apperance without anyone knowing you had anything done. Sculptra is very subtle as it progressively builds your natural collagen over a couple months.