Korean PDRN Skincare Is Everywhere. But What Do the Numbers Actually Mean?
Korean PDRN skincare is suddenly full of big numbers. One PDRN serum says 100,000 ppm. Another says 30,000 ppm. Another says just 100 ppm. Standing in front of a Korean skincare shelf, the obvious conclusion would be simple: 100,000 must be stronger than 30,000, and 30,000 must be a lot stronger than 100. That’s not…