Peptide for lips For lip rejuvenation , certain peptides are applied topically or via microneedling to stimulate collagen and elastin synthesis
Nammi D, Yarla NS, Chubarev VN, Tarasov VV, Barreto GE, Corolina Pasupulati AM, Aliev G, Reddy Neelapu NR (2017) A systematic in-silico analysis of Helicobacter pylori pathogenic islands for identification of novel drug target candidates
doi: 10.1038/nrd781
Here is the practical guidance for navigating it: If you are currently sourcing peptides from gray-market or "research use only" vendors: The reclassification provides a path to legitimate, physician-supervised access

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The side effects that occur, like reddening of the skin and urine and changes in heart rate and blood pressure are temporary and harmless