Biodroga Md Skin Booster Pore Refining Serum | Biodroga Md Skin Booster Pore Refining Serum Refines The Skin Structure. This Serum Helps Prevent Inflammation And Blackheads. It Also Stimulates The Synthesis Of Collagen. After Using This Serum, The Skin Is Visibly Duller. For A Refined, Even And Smooth Skin Structure.