https://peptideskinscience.com/ A simple, honest guide to peptides in skincare. We explain what they are, what they really do, and how to shop for them — in plain English, with no hype. en Sun, 05 Jul 2026 00:00:00 GMT https://peptideskinscience.com/peptides/cagrilintide/ https://peptideskinscience.com/peptides/cagrilintide/ Sun, 05 Jul 2026 00:00:00 GMT Cagrilintide is an investigational 'amylin analog' being tested for weight loss, often paired with semaglutide as 'CagriSema.' Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/gonadorelin/ https://peptideskinscience.com/peptides/gonadorelin/ Sun, 05 Jul 2026 00:00:00 GMT Gonadorelin is a lab-made copy of GnRH, the brain signal that tells the body to make sex hormones. It's a prescription medicine used for fertility and diagnosis. Here's what it is, what the research shows, its risks, and its legal status. https://peptideskinscience.com/peptides/oxytocin/ https://peptideskinscience.com/peptides/oxytocin/ Sun, 05 Jul 2026 00:00:00 GMT Oxytocin is the natural 'bonding hormone' and an approved hospital medicine for labor and breastfeeding. Here's what it is, what the research really shows about the trendy 'love hormone' sprays, its risks, and its legal status. https://peptideskinscience.com/peptides/cerebrolysin/ https://peptideskinscience.com/peptides/cerebrolysin/ Sun, 05 Jul 2026 00:00:00 GMT Cerebrolysin is a mix of small brain peptides given by injection, approved in some countries but not the US. Here's what it is, what the research shows, its risks, and its legal status. https://peptideskinscience.com/peptides/humanin/ https://peptideskinscience.com/peptides/humanin/ Sun, 05 Jul 2026 00:00:00 GMT Humanin is a 'mitochondrial-derived peptide' the body can make, studied for ageing and brain protection — mostly in the lab. Here's what it is, what the research shows, and its legal status. https://peptideskinscience.com/peptides/dsip/ https://peptideskinscience.com/peptides/dsip/ Sun, 05 Jul 2026 00:00:00 GMT DSIP (Delta Sleep-Inducing Peptide) is a natural peptide first linked to sleep in old animal studies. Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/larazotide/ https://peptideskinscience.com/peptides/larazotide/ Sun, 05 Jul 2026 00:00:00 GMT Larazotide is a peptide studied to tighten the gut lining ('leaky gut'). It reached Phase 3 trials for celiac disease but wasn't approved. Here's the evidence, risks, and legal status. https://peptideskinscience.com/peptides/ll-37/ https://peptideskinscience.com/peptides/ll-37/ Sun, 05 Jul 2026 00:00:00 GMT LL-37 is a natural human antimicrobial peptide studied for fighting microbes and healing wounds. Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/thymosin-alpha-1/ https://peptideskinscience.com/peptides/thymosin-alpha-1/ Sun, 05 Jul 2026 00:00:00 GMT Thymosin Alpha-1 is an immune-modulating peptide — approved abroad as Zadaxin but not FDA-approved in the US. Here's what it is, what the research shows, its risks, and its legal status. https://peptideskinscience.com/peptides/hexarelin/ https://peptideskinscience.com/peptides/hexarelin/ Sun, 05 Jul 2026 00:00:00 GMT Hexarelin is a potent synthetic peptide that tells the body to release growth hormone — but the body builds tolerance to it fast. Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/ghrp-2/ https://peptideskinscience.com/peptides/ghrp-2/ Sun, 05 Jul 2026 00:00:00 GMT GHRP-2 is a synthetic peptide that tells the body to release growth hormone, with less intense hunger than GHRP-6. Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/ghrp-6/ https://peptideskinscience.com/peptides/ghrp-6/ Sun, 05 Jul 2026 00:00:00 GMT GHRP-6 is a synthetic peptide that tells the body to release growth hormone — and it's known for a strong hunger spike. Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/sermorelin/ https://peptideskinscience.com/peptides/sermorelin/ Sun, 05 Jul 2026 00:00:00 GMT Sermorelin is a GHRH analog that nudges the body to release its own growth hormone. It was FDA-approved (as Geref) and is still prescribed through compounding pharmacies. Here's what it is, what the research shows, and its legal status. https://peptideskinscience.com/peptides/follistatin-344/ https://peptideskinscience.com/peptides/follistatin-344/ Sun, 05 Jul 2026 00:00:00 GMT Follistatin-344 is an unapproved 'research chemical' studied for blocking myostatin, the body's brake on muscle growth. Here's what it is, what the research really shows, and why the long-term safety is poorly understood. https://peptideskinscience.com/peptides/tirzepatide/ https://peptideskinscience.com/peptides/tirzepatide/ Sun, 05 Jul 2026 00:00:00 GMT Tirzepatide is an approved prescription medicine for type 2 diabetes and weight management. Here's what it is, what the research shows, its risks, and why grey-market 'research' copies aren't the real drug. https://peptideskinscience.com/peptides/melanotan-2/ https://peptideskinscience.com/peptides/melanotan-2/ Sun, 05 Jul 2026 00:00:00 GMT Melanotan-2 is an unapproved 'tanning injection' sold as a research chemical. Here's what it is, the serious safety risks — including mole and melanoma concerns — and why it isn't approved anywhere. https://peptideskinscience.com/peptides/kisspeptin/ https://peptideskinscience.com/peptides/kisspeptin/ Sun, 05 Jul 2026 00:00:00 GMT Kisspeptin is a natural hormone being studied for libido, arousal, and fertility. Here's what it is, what the research really shows, its risks, and why it isn't an approved product. https://peptideskinscience.com/peptides/pt-141/ https://peptideskinscience.com/peptides/pt-141/ Sun, 05 Jul 2026 00:00:00 GMT PT-141 (bremelanotide) is an FDA-approved prescription medicine, sold as Vyleesi, for low sexual desire in some women. Here's what it is, what the research shows, its risks, and why grey-market copies aren't the real drug. https://peptideskinscience.com/peptides/selank/ https://peptideskinscience.com/peptides/selank/ Sun, 05 Jul 2026 00:00:00 GMT Selank is a Russian-developed peptide nasal spray studied for anxiety, stress, and calm focus. It's approved in Russia but not in the US. Here's what the research really shows and its legal status. https://peptideskinscience.com/peptides/semax/ https://peptideskinscience.com/peptides/semax/ Sun, 05 Jul 2026 00:00:00 GMT Semax is a Russian-developed peptide nasal spray studied for focus, memory, and brain protection. It's approved in Russia but not in the US. Here's what the research really shows and its legal status. https://peptideskinscience.com/peptides/ss-31/ https://peptideskinscience.com/peptides/ss-31/ Sun, 05 Jul 2026 00:00:00 GMT SS-31 (elamipretide) is an investigational peptide that targets the mitochondria — the cell's energy factories. It's still in clinical trials, not approved. Here's what the research really shows. https://peptideskinscience.com/peptides/nad-plus/ https://peptideskinscience.com/peptides/nad-plus/ Sun, 05 Jul 2026 00:00:00 GMT NAD+ is a coenzyme (a helper molecule) — not a peptide — central to cell energy and DNA repair. It's sold as IV drips and supplements. Here's what it is, what the research really shows, and its status. https://peptideskinscience.com/peptides/epitalon/ https://peptideskinscience.com/peptides/epitalon/ Sun, 05 Jul 2026 00:00:00 GMT Epitalon is a lab-made four-amino-acid peptide studied for ageing and telomeres — mostly in small, older studies. Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/hcg/ https://peptideskinscience.com/peptides/hcg/ Sun, 05 Jul 2026 00:00:00 GMT HCG (Human Chorionic Gonadotropin) is a natural hormone and an approved prescription medicine used in fertility care and certain male hormone problems. Here's what it is, what it does, its risks, and its legal status. https://peptideskinscience.com/peptides/igf-1-lr3/ https://peptideskinscience.com/peptides/igf-1-lr3/ Sun, 05 Jul 2026 00:00:00 GMT IGF-1 LR3 is a modified, longer-lasting lab version of a natural growth signal. Here's what it is, what the research really shows, its real risks, and its legal status. https://peptideskinscience.com/peptides/ipamorelin/ https://peptideskinscience.com/peptides/ipamorelin/ Sun, 05 Jul 2026 00:00:00 GMT Ipamorelin is a lab-made peptide studied for nudging the body to release growth hormone. Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/cjc-1295/ https://peptideskinscience.com/peptides/cjc-1295/ Sun, 05 Jul 2026 00:00:00 GMT CJC-1295 is a lab-made peptide studied for nudging the body to release more of its own growth hormone. Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/aod-9604/ https://peptideskinscience.com/peptides/aod-9604/ Sun, 05 Jul 2026 00:00:00 GMT AOD-9604 is a modified fragment of human growth hormone once developed as a weight-loss drug — but human trials largely didn't show a strong effect. Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/mots-c/ https://peptideskinscience.com/peptides/mots-c/ Sun, 05 Jul 2026 00:00:00 GMT MOTS-c is a mitochondrial-derived peptide studied for metabolism and energy — mostly in animals and lab dishes. Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/semaglutide/ https://peptideskinscience.com/peptides/semaglutide/ Sun, 05 Jul 2026 00:00:00 GMT Semaglutide (Ozempic, Wegovy, Rybelsus) is an FDA-approved GLP-1 prescription medicine for diabetes and weight management. Here's what it is, what the research shows, its risks, and why online 'research' versions are not the real drug. https://peptideskinscience.com/peptides/tesamorelin/ https://peptideskinscience.com/peptides/tesamorelin/ Sun, 05 Jul 2026 00:00:00 GMT Tesamorelin (Egrifta) is an FDA-approved prescription medicine for HIV-related belly fat. Here's what it is, what the research shows, its risks, and why online 'research' versions are not the real drug. https://peptideskinscience.com/peptides/retatrutide/ https://peptideskinscience.com/peptides/retatrutide/ Sun, 05 Jul 2026 00:00:00 GMT Retatrutide (LY3437943) is an experimental weight-loss drug still in clinical trials. Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/kpv/ https://peptideskinscience.com/peptides/kpv/ Sun, 05 Jul 2026 00:00:00 GMT KPV is a tiny lab-made peptide studied for calming inflammation — mostly in lab and animal research. Here's what it is, what the evidence really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/tb-500/ https://peptideskinscience.com/peptides/tb-500/ Sun, 05 Jul 2026 00:00:00 GMT TB-500 is a lab-made peptide studied for healing and tissue repair — mostly in animals. Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/peptides/bpc-157/ https://peptideskinscience.com/peptides/bpc-157/ Sun, 05 Jul 2026 00:00:00 GMT BPC-157 is a synthetic peptide studied for tissue and gut healing — mostly in animals. Here's what it is, what the research really shows, its risks, and its legal status. https://peptideskinscience.com/articles/peptide-safety-coa-purity-sterility/ https://peptideskinscience.com/articles/peptide-safety-coa-purity-sterility/ Sun, 05 Jul 2026 00:00:00 GMT Peptide safety is more than the name on the vial. Learn what purity, sterility, COAs, endotoxins, labeling, and manufacturing quality really mean. https://peptideskinscience.com/articles/research-peptides-explained/ https://peptideskinscience.com/articles/research-peptides-explained/ Sun, 05 Jul 2026 00:00:00 GMT What are research peptides? Learn what 'research use only' means, why online sellers use the phrase, and why it does not make human use safe. https://peptideskinscience.com/articles/glp-1-peptides/ https://peptideskinscience.com/articles/glp-1-peptides/ Sun, 05 Jul 2026 00:00:00 GMT GLP-1 peptides transformed diabetes and weight-loss medicine. Learn the difference between approved drugs, compounded products, and risky online versions. https://peptideskinscience.com/articles/cosmetic-medical-research-peptides/ https://peptideskinscience.com/articles/cosmetic-medical-research-peptides/ Sun, 05 Jul 2026 00:00:00 GMT Peptides appear in skincare, prescription drugs, research labs, and online gray markets. Learn how to tell cosmetic, medical, and research peptides apart. https://peptideskinscience.com/articles/how-to-spot-fake-peptides/ https://peptideskinscience.com/articles/how-to-spot-fake-peptides/ Sun, 05 Jul 2026 00:00:00 GMT Straight talk on fake and dodgy research peptides — the red flags, why a random vial can't be verified, and the only peptides you can actually trust. https://peptideskinscience.com/articles/peptides-vs-sarms/ https://peptideskinscience.com/articles/peptides-vs-sarms/ Sun, 05 Jul 2026 00:00:00 GMT People lump peptides and SARMs together — they're totally different. Straight talk on what each one is, the real risks, and why neither is a free lunch. https://peptideskinscience.com/articles/pt-141-vs-melanotan-2/ https://peptideskinscience.com/articles/pt-141-vs-melanotan-2/ Sun, 05 Jul 2026 00:00:00 GMT PT-141 vs Melanotan 2, straight up. They're chemically related, but one is an FDA-approved prescription medicine and the other is an unapproved grey-market injection. https://peptideskinscience.com/articles/gonadorelin-vs-hcg/ https://peptideskinscience.com/articles/gonadorelin-vs-hcg/ Sun, 05 Jul 2026 00:00:00 GMT Gonadorelin vs HCG, plain English. Both are prescription medicines used around TRT and fertility — one works upstream, one downstream. Here's the real difference. https://peptideskinscience.com/articles/sermorelin-vs-cjc-1295/ https://peptideskinscience.com/articles/sermorelin-vs-cjc-1295/ Sun, 05 Jul 2026 00:00:00 GMT Two GHRH peptides, wildly different legal status. Sermorelin is the doctor-supervised option; CJC-1295 is the unapproved grey-market cousin. The honest breakdown. https://peptideskinscience.com/articles/cjc-1295-vs-ipamorelin/ https://peptideskinscience.com/articles/cjc-1295-vs-ipamorelin/ Sun, 05 Jul 2026 00:00:00 GMT The GH-boosting peptide duo, compared straight. Different mechanisms, why they're often stacked, and why both are unapproved and banned in sport. https://peptideskinscience.com/articles/bpc-157-vs-tb-500/ https://peptideskinscience.com/articles/bpc-157-vs-tb-500/ Sun, 05 Jul 2026 00:00:00 GMT The two 'healing peptides' everyone stacks — compared honestly. What each is studied for, why both are unapproved and banned in sport, and why neither is proven in humans. https://peptideskinscience.com/articles/semaglutide-vs-tirzepatide/ https://peptideskinscience.com/articles/semaglutide-vs-tirzepatide/ Sun, 05 Jul 2026 00:00:00 GMT Wegovy vs Zepbound, straight up. Which GLP-1 drives more weight loss, why both are prescription-only, and why grey-market versions are a bad idea. https://peptideskinscience.com/articles/best-peptides-for-beginners/ https://peptideskinscience.com/articles/best-peptides-for-beginners/ Sun, 05 Jul 2026 00:00:00 GMT New to peptides and don't know where to start? Straight talk on what's actually safe for a beginner, what needs a doctor, and what to skip entirely. https://peptideskinscience.com/articles/peptides-for-belly-fat/ https://peptideskinscience.com/articles/peptides-for-belly-fat/ Sun, 05 Jul 2026 00:00:00 GMT Can a peptide melt belly fat? Straight talk on GLP-1s, tesamorelin, AOD-9604 and the spot-reduction myth — no sales pitch, no protocols. https://peptideskinscience.com/articles/peptides-for-endurance/ https://peptideskinscience.com/articles/peptides-for-endurance/ Sun, 05 Jul 2026 00:00:00 GMT Which peptides actually help endurance — and which flunk a drug test? A straight-talking guide to MOTS-c, TB-500, CJC-1295/ipamorelin, and why training still wins.