European investigate with 20 people shown sizeable dermal good quality enhancement and atrophic acne scar reduction from PN injections, confirming its basic safety and usefulness as just one therapy. On the other hand, this calls for much larger, lengthier-time period randomized studies For additional conclusive evidence. 延緩老化—直接補充膠原蛋白：透過施打膠原蛋白針補充人體所需的膠原... https://williamj898iwj3.signalwiki.com/user