PLLA Microspheres: A Biodegradable Breakthrough in Aesthetic Medicine and Regenerative Therapy

Jul 16, 2025 · 3 min read · 1. Definition of PLLA Microspheres Poly-L-lactic acid (PLLA) microspheres are biodegradable spherical particles composed of medical-grade α-hydroxy acid polymers. They are categorized as synthetic regenerative biomaterials. Unlike traditional hyaluro...