PLLA is a type of polylactic acid (PLA), a degradable material that has been
safely used for many years. PLLA is a biostimulator that provides immediate
volume improvement. As a biostimulator, PLLA promotes volumizing through
the production of collagen and the vascularization of existing collagen

　PCL is a raw material used in thread lifting. It is a polymer material certified
by the US FDA and is used to improve wrinkles and facial contours. PCL is
called Polycaprolactone. It is a medical polymer that has been used as a drug
release control agent and surgical suture for decades. It is a safe ingredient
certified by the FDA and CE and helps maintain skin elasticity