Stem cells can add volume to deep facial lines and wrinkles that develop from aging, sun exposure, and other factors. An alternative to synthetic dermal fillers, adipose stem cell injections add volume beneath the skin where repeated facial movements has caused collagen to break down and wrinkles to develop. Stem cells encourage the development of blood vessels and tissue regeneration, which means these injections have long-lasting results. They may be combined with platelet poor plasma (PPP) injections, which also help fill wrinkles.