REJURAN COSMETICS is a derma-skincare brand developed by Korean biopharmaceutical company PharmaResearch, the maker of the REJURAN skin booster, and presents itself as Korea's original PDRN-based skincare brand. Its formulas are built on patented c-PDRN, derived from salmon DNA, to help improve the look of skin texture, hydration and radiance across masks, toners, serums and creams.