PDRN injection is Korea's first skin regeneration promoter using PDRN extracted from regressive fish languages. PDRN (polydeoxyribonucleotide) is a substance that exists in trace amounts in new tissues and normalizes the DNA structure to a special size, promotes cell regeneration and growth, and helps rapid skin regeneration. Cell regeneration is promoted at the DNA stage, acting on fibroblasts, a type of stem cell, to biosynthesize collagen in the dermis tissue, which accounts for 90% of the skin, to fundamentally regenerate damaged skin.