This is a serum from MedeCube. It's new, unopened, and I purchased it about a month ago on Qoo10. This product is quite popular, so if you're interested, why not give it a try? It's an ampoule containing 10,000ppm of collagen PDRN, a salmon DNA component similar to skin tissue, for powerful scar care. Scar toning care It effectively eliminates deeply rooted blemishes and scars, leading to bright and clear skin. Improves skin elasticity: It tightly connects sagging skin tissue, firming the skin and making it less prone to blemishes and scars. Pink-colored texture to brighten blemishes and scars: The pure pink color of vitamin B12 does not cause skin pigmentation.