GOURI is a collagen-stimulating Skin Booster that injects liquid polycaprolactone (PCL) into the deep dermal layer. Because it is a particle-free liquid formulation, it spreads relatively evenly in the injection area, and as it gradually breaks down, it stimulates fibroblasts. During this process, new collagen fills in, making the skin firmer from the inside out. Rather than immediately adding volume, it gradually improves elasticity and texture.