Dermafactory PDRN 4 % Ampoule 30mlDERMA FACTORY PDRN 4% Ampoule is a functional ampoule that provides firming care from within to restore skin elasticity lost due to various causes with a combination of PDRN 4% and effective elasticity care active ingredients such as 1% Panthenol, 1000ppm hydrolyzed wheat protein and 100ppm Proteoglycan. PDRN is a precious raw material extracted from salmon DNA, which is similar to skin tissue, and is extracted in very small quantities. It helps