Cosmetic & Skin Peptides

Explore skin & cosmetic profiles and evidence guides by mechanism, research stage, safety context, and primary sources.

Research area

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Category membership organizes related research questions. It does not establish effectiveness, approval, or suitability for a person.

Evidence boundary

Evidence for an isolated ingredient, a copper complex, and a finished topical formulation is not interchangeable. Match the tested material and endpoint.

Profiles

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Research methodology

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Cosmetic peptide guide

Compare signal, carrier, and neuromuscular peptides by formulation and evidence.

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GHK-Cu research guide

Separate native GHK, copper complexes, routes, and skin or wound evidence.

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Peptide bioavailability

Understand barriers created by route, formulation, stability, and delivery.

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Profiles in this research area

Open a profile for its mechanism, evidence stage, safety context, and linked references.

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GHK-CuGHK-Cu is a naturally occurring copper-binding tripeptide that modulates gene expression, attenuates inflammation, improves antioxidant responses, and…MatrixylMatrixyl (palmitoyl pentapeptide-4) is a synthetic lipopeptide that stimulates collagen, collagen IV, and hyaluronic acid synthesis in skin fibroblast…Argireline (Acetyl Hexapeptide-8)A synthetic hexapeptide used in topical cosmetics that mimics part of the SNAP-25 protein to reduce the appearance of expression lines and wrinkles th…KPVKPV is a C-terminal tripeptide fragment of alpha-melanocyte stimulating hormone with potent anti-inflammatory properties. It is primarily researched f…Acetyl Hexapeptide-3 (Argireline)Acetyl Hexapeptide-3 (Argireline) is a synthetic hexapeptide that inhibits SNARE complex formation, reducing neurotransmitter release and attenuating …Acetyl Hexapeptide-8Acetyl Hexapeptide-8 is the updated INCI name for Argireline (formerly Acetyl Hexapeptide-3), a synthetic SNARE complex inhibitor that reduces neurotr…Acetyl Tetrapeptide-5Acetyl Tetrapeptide-5 (Eyeseryl) is a Lipotec-developed peptide that targets undereye puffiness and edema by reducing vascular permeability and inhibi…AfamelanotideA synthetic, potent analog of alpha-melanocyte-stimulating hormone that stimulates eumelanin production, approved as a subcutaneous implant for erythr…AHK (Tripeptide-3)AHK (Tripeptide-3) is a three-amino-acid peptide (Ala-His-Lys) investigated for its effects on hair growth, wound healing, and skin rejuvenation. It a…AHK-CuAHK-Cu is a copper-complexed tripeptide (Ala-His-Lys-Cu) studied for its effects on collagen synthesis, hair growth, and wound healing. It modulates V…ANA Gold (Gold Tripeptide-1)ANA Gold is a colloidal gold-tripeptide-1 conjugate that combines gold nanoparticle anti-inflammatory and antioxidant properties with tripeptide-1's c…Beta-DefensinsBeta-defensins (hBD-1, hBD-2, hBD-3) are cationic antimicrobial peptides of the innate immune system, expressed by epithelial cells to provide first-l…Botulinum ToxinBotulinum toxin is a potent neurotoxin produced by Clostridium botulinum that blocks acetylcholine release at neuromuscular junctions through SNARE pr…CartalaxCartalax (AED) is a synthetic tripeptide bioregulator that modulates fibroblast function across multiple tissues, studied for its geroprotective effec…DECAPEPTIDE-12Decapeptide-12 is a synthetic oligopeptide that potently inhibits tyrosinase activity, reducing melanin production in melanocyte cultures. It is under…DermcidinDermcidin (DCD) is a 47-amino acid antimicrobial peptide constitutively secreted by human eccrine sweat glands, providing first-line innate immune def…Dipeptide Diaminobutyroyl BenzylamideDipeptide Diaminobutyroyl Benzylamide is the active ingredient in SYN-AKE, a synthetic peptide mimicking waglerin-1 from temple viper venom that acts …EGF (Epidermal Growth Factor)EGF is a 53-amino acid polypeptide that binds the EGF receptor to stimulate cell proliferation, differentiation, and survival, with applications in wo…

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Elastin TripeptideElastin-derived tripeptides such as Val-Gly-Val (VGV) and related VGVAPG repeat-derived sequences are bioactive peptide fragments investigated for the…Follistatin-315Follistatin-315 is a naturally occurring activin- and myostatin-binding glycoprotein isoform studied for its roles in muscle growth, inflammation regu…Glow Blend (TB-500 / BPC-157 / GHK-Cu)A research peptide blend combining TB-500 (10mg), BPC-157 (10mg), and GHK-Cu (50mg) — three tissue-repair and anti-aging peptides with complementary m…Glow ProtocolGlow Protocol is a multi-compound regimen combining skin-supporting peptides, antioxidants, and growth factors designed to enhance dermal collagen syn…Hexapeptide-11Hexapeptide-11 is a yeast-derived peptide from Saccharomyces cerevisiae that stimulates keratinocyte renewal and cell cycle progression, researched fo…KGF (Keratinocyte Growth Factor)KGF (FGF-7) is a 163-amino acid growth factor that specifically targets keratinocytes via the FGFR2-IIIb receptor, with clinical applications in mucos…Klow80 Blend (TB-500 / BPC-157 / GHK-Cu / KPV)An 80mg research peptide blend combining TB-500 (10mg), BPC-157 (10mg), GHK-Cu (50mg), and KPV (10mg) — integrating potent anti-inflammatory action wi…Lipopeptide (Palmitoyl Tetrapeptide-7 / Pal-GQPR)A palmitoylated tetrapeptide (Pal-Gly-Gln-Pro-Arg) used topically in anti-aging cosmetics to reduce inflammatory cytokine signalling and support skin …LKEK (Vascular Bioregulator)LKEK is a synthetic tetrapeptide bioregulator (Leu-Lys-Glu-Lys) investigated for its effects on vascular endothelial function, collagen synthesis regu…LL-37LL-37 is the only human cathelicidin antimicrobial peptide, playing a critical role in innate immunity through direct antimicrobial activity, immunomo…Melanotan IA synthetic linear analog of alpha-melanocyte-stimulating hormone (alpha-MSH) that activates melanocortin-1 receptors to stimulate melanogenesis, deve…Melanotan IIA synthetic cyclic heptapeptide analog of alpha-MSH that non-selectively activates melanocortin receptors, producing skin tanning, appetite suppressio…Nonapeptide-1Nonapeptide-1 (Melanostatine-5) is an MSH antagonist peptide that competes for MC1R receptor binding to inhibit melanin synthesis, used in skin bright…Oligopeptide-68Oligopeptide-68 (B-White) is a tyrosinase inhibitor peptide that blocks melanin biosynthesis by reducing MITF expression, used in skin brightening and…Palmitoyl Hexapeptide-12Palmitoyl Hexapeptide-12 (Biopeptide EL) is a Sederma-developed lipopeptide that stimulates elastin synthesis in dermal fibroblasts, researched for im…Palmitoyl Tripeptide-1 (Pal-GHK)Palmitoyl Tripeptide-1 is a lipopeptide fragment of collagen that stimulates collagen I, III, and fibronectin synthesis through TGF-β pathway activati…Palmitoyl Tripeptide-38Palmitoyl Tripeptide-38 (MATRIXYL synthe'6) is a synthetic signal peptide developed by Sederma that stimulates production of six major extracellular m…Palmitoyl Tripeptide-5 (SYN-COLL)Palmitoyl Tripeptide-5 is a thrombospondin-1 mimetic lipopeptide that activates TGF-β signaling to stimulate procollagen I synthesis, marketed under t…Palmitoyl Tripeptide-8Palmitoylated tripeptide based on alpha-MSH (Neutrazen), used in topical cosmetics to calm sensitive, reactive skin and reduce neurogenic inflammation…Pentapeptide-18Pentapeptide-18 is the INCI designation for the enkephalin-analog neuromuscular peptide marketed as Leuphasyl by Lipotec, which reduces expression wri…PTD-DBMPTD-DBM is a cell-permeable peptide that activates the Wnt/beta-catenin signaling pathway by binding the Dishevelled protein, promoting hair follicle …Rigin (Palmitoyl Tetrapeptide-7)Rigin is a palmitoylated tetrapeptide fragment of immunoglobulin G that modulates interleukin-6 production and matrix metalloproteinase activity. It i…SNAP-8SNAP-8 (acetyl octapeptide-3) is a synthetic peptide that inhibits SNARE complex formation to reduce neurotransmitter release at the neuromuscular jun…SYN-AKE (Dipeptide Diaminobutyroyl Benzylamide Diacetate)SYN-AKE is a synthetic tripeptide that mimics waglerin-1 from the Temple Viper (Tropidolaemus wagleri), acting as a competitive antagonist at the musc…Tripeptide-10 CitrullineTripeptide-10 Citrulline (Decorinyl) is a Lipotec-developed peptide that stimulates decorin production to regulate collagen fibrillogenesis, improving…Tripeptide-29Tripeptide-29 is a collagen-fragment tripeptide and GHK analogue that stimulates procollagen I synthesis and promotes wound healing by mimicking a typ…

Read the full category research notes

These notes map terminology and research themes. Verify claims in the linked profile references and current primary records.

Cosmetic & Skin Peptides

This category covers peptides researched for their effects on skin health, including collagen and elastin stimulation, wrinkle reduction through neurotransmitter modulation, pigmentation control, and dermal matrix remodeling. Many are used in topical formulations for research applications.

Complete Peptide Directory

Signal Peptides (Collagen Stimulators)

Peptide	Description	Primary Mechanism
GHK-Cu	Copper tripeptide that modulates 4,000+ genes for tissue remodeling	Stimulates collagen, elastin, GAGs; anti-inflammatory gene activation; hair growth
Matrixyl	Palmitoyl pentapeptide-3 that signals collagen turnover	MMP-mediated signaling; collagen I/IV and hyaluronic acid synthesis
Palmitoyl Pentapeptide-4	Lipophilic pentapeptide for enhanced skin penetration and collagen stimulation	Fibroblast activation; extracellular matrix protein production
Palmitoyl Tripeptide-1	TGF-beta mimetic peptide for dermal matrix repair	Stimulates collagen and glycosaminoglycan synthesis; skin firmness
Palmitoyl Tripeptide-5	Thrombospondin-mimetic peptide that activates TGF-beta	Collagen production via TGF-beta pathway activation
Lipopeptide (Biopeptide EL)	Palmitoylated tetrapeptide for fibroblast activation	Collagen and hyaluronic acid production in skin cells
AHK-Cu	Copper tripeptide with VEGF and TGF-beta1 modulation	Collagen synthesis, hair growth stimulation, wound healing
AHK (Tripeptide-3)	Fibroblast-activating peptide for tissue regeneration	Hair growth, wound healing, tissue regeneration
Rigin (Palmitoyl Tetrapeptide-7)	IL-6 and MMP modulating peptide derived from IgG fragment	Skin rejuvenation, immunostimulation, anti-inflammatory
Syn-Coll	Palmitoyl tripeptide that mimics thrombospondin to stimulate collagen	TGF-beta activation; collagen III synthesis; anti-aging
Elastin Tripeptide	Small peptide fragment that promotes elastin fiber production	Elastogenesis; skin elasticity restoration; dermal matrix support
Renovage	Teprenone-based peptide complex for cellular longevity in skin	Telomere protection in skin cells; reduces age spots and redness
Collagen Tripeptide	Bioactive fragment from collagen hydrolysis for skin support	Stimulates fibroblast collagen production; skin and joint repair

Anti-Wrinkle (Neuromuscular) Peptides

Peptide	Description	Primary Mechanism
SNAP-8	Octapeptide that inhibits SNARE complex for wrinkle reduction	SNAP-25 mimetic; reduces neurotransmitter release at neuromuscular junction
Acetyl Hexapeptide-3 (Argireline)	Hexapeptide "Botox alternative" that reduces expression lines	SNARE complex inhibition; reduces acetylcholine release
Argireline Solution	Ready-to-use Argireline formulation for topical application	Same SNARE inhibition mechanism in optimized delivery vehicle
SYN-AKE	Synthetic tripeptide that mimics Waglerin-1 snake venom peptide	Nicotinic acetylcholine receptor antagonist; muscle relaxation
Leuphasyl	Pentapeptide that inhibits enkephalinase for wrinkle reduction	Synergizes with Argireline; reduces neuromuscular signaling
Eyeliss	Peptide complex targeting under-eye puffiness and dark circles	Improves lymphatic circulation; reduces capillary permeability

Pigmentation & Skin Tone

Peptide	Description	Primary Mechanism
Decapeptide-12	Tyrosinase-inhibiting peptide for skin brightening	Reduces melanin synthesis; hyperpigmentation and melasma research

Common Research Themes

Signal Peptides vs. Neuromuscular Peptides: Collagen-stimulating peptides (GHK-Cu, Matrixyl) rebuild the dermal matrix over time, while anti-wrinkle peptides (Argireline, SNAP-8, SYN-AKE) relax muscles for immediate wrinkle reduction. These are complementary mechanisms.

Copper Peptides: GHK-Cu and AHK-Cu both use copper as a cofactor for lysyl oxidase (collagen cross-linking) and superoxide dismutase (antioxidant defense), giving copper peptides dual structural and protective roles.

Topical Delivery: Most cosmetic peptides are formulated for topical application, often with palmitoyl or acetyl modifications to enhance skin penetration through the stratum corneum.

Getting Started

If you are new to this category, we recommend starting with GHK-Cu — a naturally occurring copper peptide with the broadest evidence base for skin rejuvenation and anti-aging effects. From there, explore related peptides through the See Also sections on each page to build a comprehensive understanding of the research landscape.