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Head-to-head comparison of 10 cosmetic peptides for anti-aging formulations. Data-driven guide covering Argireline, Matrixyl, GHK-Cu, SYN-AKE, and more with pricing, efficacy data, and formulation tips.

Glutathione Oxidized (GSSG): Analytical Reference Standard and Redox-Active Ingredient Glutathione oxidized (GSSG, CAS 27025-41-8) is the disulfide-bonded dimer of reduced glutathione (GSH). With a molecular weight of 612.63 g/mol, GSSG serves two distinct roles in the cosmetic and analytical fields: as a reference standard for measuring the GSH/GSSG redox ratio — a primary biomarker of

Glutathione (Reduced GSH) – Tripeptide Antioxidant for Skin Brightening and Detox INCI: Glutathione | CAS: 70-18-8 | MW: 307.32 g/mol | Composition: L-glutamate, L-cysteine, glycine tripeptide Glutathione (GSH) is the primary intracellular antioxidant in human tissue. It is a linear tripeptide of L-glutamate, L-cysteine and glycine, linked by a gamma-peptide bond between glutamate and cysteine.

I have spent 15 years formulating antioxidant serums, and Ergothioneine (EGT) is the single most underrated active I have worked with. Most cosmetic chemists know ascorbic acid inside out, but EGT operates on a completely different level. It is a naturally occurring amino acid derivative — specifically 2-mercaptohistidine trimethylbetaine (CAS 497-30-3, INCI: Ergothioneine) — found

If you work with sensitive-skin formulations, you have probably heard of ectoin. What you might not know is just how well-documented this molecule is. Ectoin is a cyclic amino acid derivative (1,4,5,6-tetrahydro-2-methyl-4-pyrimidinecarboxylic acid) produced naturally by extremophilic bacteria that survive in salt lakes, hot springs, and deserts. The same water-structuring mechanism that keeps those bacteria

Dipeptide Diaminobutyroyl Benzylamide Diacetate for Anti-Wrinkle Formulations If you formulate anti-aging serums or creams that target expression lines, this peptide belongs on your shortlist. Dipeptide Diaminobutyroyl Benzylamide Diacetate is a synthetic dipeptide modeled after waglerin-1, a component found in temple viper (Tropidolaemus wagleri) venom. It functions as a competitive antagonist at the muscular nicotinic acetylcholine

Dipeptide-2: Anti-Puffiness Eye Contour Peptide for Professional Formulations If you develop eye contour products, Dipeptide-2 is one of the few peptides with a specific, measurable mechanism for reducing periorbital puffiness. This Val-Trp dipeptide (CAS 24587-37-9, MW 202.21 g/mol) promotes lymphatic drainage in the under-eye area and strengthens capillary walls, addressing the two primary causes of

Decarboxy Carnosine HCl: Carnosinase-Resistant Anti-Glycation Peptide Decarboxy Carnosine HCl (CAS 5765-49-9, beta-alanyl-histamine) is a structurally modified carnosine derivative engineered to resist degradation by serum carnosinase (CN1), the enzyme that rapidly breaks down L-carnosine in human tissue. With a molecular weight of 210.24 g/mol, this dipeptide derivative scavenges reactive carbonyl species — the precursors to advanced

Decapeptide-4: KGF-Mimetic Peptide for Intensive Epidermal Repair Decapeptide-4 is a biomimetic decapeptide engineered to reproduce the signaling activity of keratinocyte growth factor (KGF/FGF-7). With a molecular weight of approximately 1100 g/mol, this custom-synthesis peptide targets the FGFR2-IIIb receptor on basal keratinocytes, triggering proliferation and accelerated epidermal turnover. TCS NEXUS S.L. supplies research-grade and cosmetic-grade Decapeptide-4

Copper peptides have been used in skincare for over 30 years, yet most formulators still think of GHK-Cu (CAS 89030-95-5) as just a “repair peptide.” That sells it short. GHK-Cu simultaneously drives collagen synthesis, suppresses inflammatory cytokines, and reduces oxidative damage — and all three mechanisms have solid in-vitro data behind them. If you are