Question: What are some of the fillers that use human-based collagen?
Answer: There used to be several different fillers that used human-based collagen but, honestly in these times, I have not used a collagen product since Restylane came out seven or eight years ago. My personal opinion is that the hyaluronic acid products are so far superior in consistency and longevity compared to human-based collagen products that I really have not had much use for those products since I have been using Restylane and Juvederm.
