So far GHK-Cu has the best research and it seems to have promise when used topically for cosmetic purposes
[PubMed] [Google Scholar] 162.Hilchie AL, Doucette CD, Pinto DM, Patrzykat A, Douglas S, Hoskin DW
(Rule of 5 framework) Sikiric P, et al
For example, controlled activation of NLRP3 inflammasome or cGAS-STING pathways via mitochondrial DAMP mimetics might boost protective immunity without causing excessive inflammation (Sun and Cheng, 2020
PDRN is popular in Korea for its skin-regenerative, reparative, and brightening properties
Research in American Journal of Pathology showed T4 accelerated re-epithelialization in intestinal ulcer models and reduced fibrosis formation