The line of PLLA products found here contain powerful ingredients used to significantly improve the hydration and collagen production in skin. They are serums in a class of their own. The first ingredient making this line so spectacular is the fact it contains the highest grade of poly-l-lactic acid (PLLA) on the market. It is a bio-compatible, biodegradable material widely used for many years in dissoluble stitches, soft tissue implants, and other types of implants. PLLA products will upgrade your regimen to filler-like results without the costly filler treatments.