"It has been noted that PDRN has been long used as a tissue-repair stimulating agent for several dermatological conditions such as ulcers and burns. According to clinical studies published in 2016, PDRN has also proven to improve pigmentation and achieve an overall whitening in complexion"( https://www.shenstherapeutics.com/blog/guide-to-pdrn-does-pdrn-truly-live-up-to-its-hype/ ).