What is filler fatigue? Dermatologist Dr. Sonia Batra shares that if you keep stretching out the skin with something from the outside sooner or later your skin is going to sag. Dr. Batra warns that there are other factors to the aging of the face – it’s not just volume loss. There is a loss of elasticity to the skin as well. She suggests taking a break from filler and opt for tightening devices or even platelet-rich plasma to help build collagen in your skin.