Updated

Copper peptides, particularly the compound GHK-Cu, have become a major social media trend, marketed in creams and increasingly as injections for firmer skin, wound healing, and anti-aging effects. Reporting notes that the trend's popularity has significantly outpaced the clinical evidence supporting these claims. Experts caution that while some topical formulations have limited supporting research, the shift toward injectable use lacks robust safety and efficacy data, raising concerns among dermatologists and public health experts about consumers self-administering unproven treatments.