AestheFill® (PDLLA, poly-D, L-lactic acid) is an injectable dermal filler to improve facial wrinkles and folds through collagen stimulation. It fills the injected spaces and maintains the initial volume for a certain period of time. The effectiveness and safety had been proved by clinical study. 
Collagen is an essential scaffold protein that gives smoothness and elasticity to skin, but its production declines with age. Skin aging results from a series of divergent processes which affect many constituents of the skin and hence its appearance. 
Injectable PDLLA is a biocompatible, biodegradable, biostimulatory and long-lasting substance that is used as a new soft tissue filler. It also has a short reconstitution time, needs little water for reconstitution, and has a lower complication rate compared with PLLA.