Our Top Picks for the Best Peptide SerumsEditor’s Pick: , $64​, $64​ Best Peptide Serum for Fine Lines: , $32​, $32​ Best Peptide Serum for Anti-Aging: , $150​, $150​ Best for Glass Skin: , $59​Of course, like vitamin C and vitamin A, peptides come in a variety of forms. In skin care specifically, you’ll see a lot of carrier, signal, and neurotransmitter peptides. “And neurotransmitter peptides are known for their Botox-type benefits.” While neurotoxins like Botox paralyze our muscles to smooth and prevent wrinkles, neurotransmitter peptides block the chemicals that trigger muscle contractions. Read on to discover the best peptide serums for a plump, dewy complexion.