Our Top Peptide Serums Best Overall: SkinCeuticals P-Tiox, $150 Best for Expression Lines: Allies of Skin Multi Peptides & GF Advanced Lifting Serum, $188 Best Firming: SkinMedica TNS Advanced+ Serum, $295 Best Budget: The Inkey List Collagen Peptide Serum, $17 Best for Large Pores: Beplain Mung Bean Pore Tight-Up Serum, $34 Best for Mature Skin: Laneige Bouncy and Firm Serum, $45 Best for Sensitive Skin: Este Lauder Advanced Night Repair Synchronized Multi-Recovery Complex, $85 Best Firming: Medik8 Liquid Peptides Advanced MP Face Serum, $94 Best Overall: SkinCeuticals P-Tiox Why it's worth it: We can go on about the science of the SkinCeuticals P-Tioxs powerhouse peptide duo, but here are the basics: The neuropeptides in this formula, which signal skin cells to repair damage and boost collagen, target expression lines that are too risky to treat with neuromodulators like Botox, such as nasolabial folds (smile lines)

The symptoms develop suddenly and include: hives swelling of the face or mouth wheezing fast, shallow breathing a fast heart rate clammy skin anxiety or confusion dizziness vomiting blue or white lips fainting or loss of consciousness If someone has these symptoms: Check whether they are carrying an epinephrine pen
Biochemical studies confirmed direct binding to ERR proteins and enhancement of their transcriptional activity in reporter gene assays
While no study has shown BPC-157 promoting tumor growth, its VEGF-upregulating mechanism warrants caution (Sikiric et al., 2014)
Use consistently for minimum 3 months before evaluating results