There are good clinical studies that indicate that hyaluronic acid fillers like Restylane [recently approved by the FDA for use in the lips] have some ability to stimulate fibroblasts to produce collagen. So it stands to reason that it could do so in the lips.
Q: Do fillers in the lips stimulate collagen production?
What our experts say:
There is a lot of information that fillers in any part of the body stimulate collagen production. In some patients, not only does it stimulate collagen production but after a few injections, the products begin to last longer. Between these two mechanisms, the injections get really great results.
West Palm Beach, Florida