Pair page
Pal-GHK with Pentapeptide-18
Mechanism-tag overlap and published literature for Pal-GHK and Pentapeptide-18, pulled verbatim from each Kalios compound profile. Kalios is a literature reference, not a recommendation.
Mechanism overlap
Mechanism tags are verbatim labels on each compound's profile. Generic tags ("peptide", "small-molecule", "research-chemical") are excluded from this overlap view. Tags are descriptive — not an inference about combined effect.
Pal-GHK unique
palmitoylated-copper-peptide-analog
Shared
cosmetic-peptide
Pentapeptide-18 unique
enkephalin-analog
Quick facts
Pal-GHK
RouteTopical only
Half-lifeNot listed
FDA statusCosmetic ingredient
WADAN/A (topical cosmetic)
Pentapeptide-18
RouteTopical only
Half-lifeNot listed
FDA statusCosmetic ingredient
WADAN/A — topical cosmetic
Literature table
Classified references from each compound profile. Click a column header to sort. Click a PMID to open PubMed. Findings are quoted verbatim from each profile's literature_summary; nothing here is added or interpreted.
| Year | Compound | Source | Finding |
|---|---|---|---|
| 2005 | Pal-GHK | Robinson LR, Fitzgerald NC, Doughty DG, Dawes NC, Berge CA, Bissett DL. Topical palmitoyl pentapeptide provides improvement in photoaged human facial skin. International Journal of Cosmetic Science. 2005;27(3):155-160. doi:10.1111/j.1467-2494.2005.00261.x. PMID: 18492182. (Found… PMID 18492182 | human trial |
| 1998 | Pal-GHK | Abdulghani AA, Sherr A, Shirin S, Solodkina G, Tapia EM, Wolf B, Gottlieb AB. Effects of topical creams containing vitamin C, a copper-binding peptide cream, and melatonin compared with tretinoin on the ultrastructure of normal skin: a pilot clinical, histologic, and ultrastruct… | human pilot |
| 1988 | Pal-GHK | Maquart FX, Pickart L, Laurent M, Gillery P, Monboisse JC, Borel JP. Stimulation of collagen synthesis in fibroblast cultures by the tripeptide-copper complex glycyl-L-histidyl-L-lysine-Cu2+. FEBS Letters. 1988;238(2):343-346. doi:10.1016/0014-5793(88)80509-x. PMID: 3138181. (Th… PMID 3138181 | preclinical, in vitro |
| 2018 | Pal-GHK | Pickart L, Margolina A. Regenerative and Protective Actions of the GHK-Cu Peptide in the Light of the New Gene Data. International Journal of Molecular Sciences. 2018;19(7):1987. doi:10.3390/ijms19071987. PMID: 29986520; PMC6073405. (2018 gene-expression-based review using Broad… PMID 29986520 | mechanism / discovery |
| 2017 | Pal-GHK | Pickart L, Vasquez-Soltero JM, Margolina A. The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline. Brain Sciences. 2017;7(2):20. doi:10.3390/brainsci7020020. PMID: 28241430. (Extension of GHK transcriptomic effects; rele… PMID 28241430 | mechanism / discovery |
| 2018 | Pal-GHK | Pickart L, Margolina A. Skin Regenerative and Anti-Cancer Actions of Copper Peptides. Cosmetics. 2018;5(2):29. doi:10.3390/cosmetics5020029. (Contemporary MDPI Cosmetics review of copper-peptide skin biology applicable to the Pal-GHK-in-situ-GHK-Cu formation hypothesis.) | review |
| 2015 | Pal-GHK | Pickart L, Vasquez-Soltero JM, Margolina A. GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration. BioMed Research International. 2015;2015:648108. doi:10.1155/2015/648108. PMID: 26236730; PMC4508379. (Comprehensive review of GHK's multi-pathway s… PMID 26236730 | review |
| 2008 | Pal-GHK | Pickart L. The human tri-peptide GHK and tissue remodeling. Journal of Biomaterials Science, Polymer Edition. 2008;19(8):969-988. doi:10.1163/156856208784909435. PMID: 18644225. (Foundational review of the parent tripeptide GHK, its tissue-remodeling biology, and the copper-coor… PMID 18644225 | review |
| 2005 | Pal-GHK | Finkley MB, Appa Y, Bhandarkar S. Copper peptide and skin. Cosmeceuticals and Active Cosmetics: Drugs vs. Cosmetics. Marcel Dekker, New York; 2005:549–563. (Classical cosmetic-dermatology chapter summarizing GHK-Cu-containing facial cream clinical data — the cream data most ofte… | review |
| 2003 | Pal-GHK | Sederma (Croda International). Matrixyl 3000 technical dossier and product information sheets. Sederma, Le Perray-en-Yvelines, France. 2003–2024. (Manufacturer's technical documentation for the Pal-GHK + Pal-GQPR combination active — the primary source for recommended use levels… | industry documentation |
| 2002 | Pal-GHK | Mas-Chamberlin C, Lintner K, Basset L, Adhoute H, Revuz J. Relevance of antiwrinkle treatment of a peptide: 4 months clinical double blind study vs excipient. Annales de Dermatologie et de Vénéréologie. 2002;129(1S):456. Proceedings, 20th World Congress of Dermatology, Paris. (E… | industry documentation |
| 2000 | Pal-GHK | Lintner K, Peschard O. Biologically active peptides: from a laboratory bench curiosity to a functional skin care product. International Journal of Cosmetic Science. 2000;22(3):207-218. doi:10.1046/j.1467-2494.2000.00010.x. (Sederma researcher review of the palmitoyl-peptide lipi… | industry documentation |
| 2013 | Pentapeptide-18 | Wang Y, Wang M, Xiao S, Pan P, Li P, Huo J. The anti-wrinkle efficacy of argireline, a synthetic hexapeptide, in Chinese subjects: a randomized, placebo-controlled study. Am J Clin Dermatol. 2013 Apr;14(2):147-153. doi:10.1007/s40257-013-0009-9. PMID: 23435580. (Placebo-controll… PMID 23435580 | human trial |
| 2014 | Pentapeptide-18 | Dragomirescu AO, Andoni M, Ionescu D, Andrei F. The Efficiency and Safety of Leuphasyl—A Botox-Like Peptide. Cosmetics. 2014;1(2):75-81. doi:10.3390/cosmetics1020075. (Only peer-reviewed open-label human efficacy paper specific to Pentapeptide-18; manufacturer-adjacent but metho… | human pilot |
| 1999 | Pentapeptide-18 | Acosta CG, López HS. delta opioid receptor modulation of several voltage-dependent Ca(2+) currents in rat sensory neurons. J Neurosci. 1999 Oct 1;19(19):8337-8348. doi:10.1523/JNEUROSCI.19-19-08337.1999. PMID: 10493736; PMCID: PMC6783030. (Direct electrophysiological evidence th… PMID 10493736 | preclinical, in vivo |
| 2015 | Pentapeptide-18 | Kraeling ME, Zhou W, Wang P, Ogunsola OA. In vitro skin penetration of acetyl hexapeptide-8 from a cosmetic formulation. Cutan Ocul Toxicol. 2015 Mar;34(1):46-52. doi:10.3109/15569527.2014.894521. PMID: 24641245. (Permeation analog study — demonstrates that ~0.22% of topically a… PMID 24641245 | preclinical, in vitro |
| 2002 | Pentapeptide-18 | Blanes-Mira C, Clemente J, Jodas G, Gil A, Fernández-Ballester G, Ponsati B, Gutierrez L, Pérez-Payá E, Ferrer-Montiel A. A synthetic hexapeptide (Argireline) with antiwrinkle activity. Int J Cosmet Sci. 2002 Oct;24(5):303-310. doi:10.1046/j.1467-2494.2002.00153.x. PMID: 1849852… PMID 18498523 | mechanism / discovery |
| 1975 | Pentapeptide-18 | Hughes J, Smith TW, Kosterlitz HW, Fothergill LA, Morgan BA, Morris HR. Identification of two related pentapeptides from the brain with potent opiate agonist activity. Nature. 1975 Dec 18;258(5536):577-580. doi:10.1038/258577a0. PMID: 1207728. (The landmark Hughes & Kosterlitz p… PMID 1207728 | mechanism / discovery |
| 1977 | Pentapeptide-18 | Hughes J, Kosterlitz HW, Smith TW. The distribution of methionine-enkephalin and leucine-enkephalin in the brain and peripheral tissues. Br J Pharmacol. 1977 Dec;61(4):639-647. doi:10.1111/j.1476-5381.1977.tb07557.x. PMID: 597668. (Follow-up Hughes/Kosterlitz distribution paper… PMID 597668 | pharmacology |
| 2024 | Pentapeptide-18 | Cullen JM, Cascella M. Physiology, Enkephalin. StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2024. PMID: 32491696. (Comprehensive physiology review of enkephalin structure, receptor pharmacology, and degradation — useful pharmacology reference for the Leuph… PMID 32491696 | review |
| 2022 | Pentapeptide-18 | Mortazavi SM, Moghimi HR. Skin permeability, a dismissed necessity for anti-wrinkle peptide performance. Int J Cosmet Sci. 2022 Apr;44(2):232-248. doi:10.1111/ics.12770. PMID: 35152433. (Independent review of the skin-permeation bottleneck that constrains all topical anti-wrinkl… PMID 35152433 | review |
| 2012 | Pentapeptide-18 | Reddy B, Jow T, Hantash BM. Bioactive oligopeptides in dermatology: Part I. Exp Dermatol. 2012 Aug;21(8):569-575. doi:10.1111/j.1600-0625.2012.01528.x. PMID: 22775991. (Dermatology-journal review of bioactive cosmetic oligopeptides including the neurotransmitter-affecting peptid… PMID 22775991 | review |
| 2009 | Pentapeptide-18 | Zhang L, Falla TJ. Cosmeceuticals and peptides. Clin Dermatol. 2009 Sep-Oct;27(5):485-494. doi:10.1016/j.clindermatol.2009.05.013. PMID: 19695481. (Foundational dermatology-journal review of cosmeceutical peptides that contextualizes Leuphasyl within the neurotransmitter-affecti… PMID 19695481 | review |
| 2005 | Pentapeptide-18 | Lipotec S.A. LEUPHASYL®: A New Pentapeptide for Expression Wrinkles. Technical dossier / formulator brochure. Barcelona: Lipotec; 2005. (Originator manufacturer dossier, widely re-cited across cosmetic industry literature; source of the 11.64% stand-alone and 24.62% Leuphasyl +… | industry documentation |
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Frequently asked
Have Pal-GHK and Pentapeptide-18 been studied together?
No co-administration studies between Pal-GHK and Pentapeptide-18 are catalogued on Kalios. The pair page lists only the individual published literature for each compound and any shared mechanism tags.
What mechanisms do Pal-GHK and Pentapeptide-18 share?
Pal-GHK and Pentapeptide-18 share these mechanism tags on their Kalios profiles: cosmetic-peptide. Tags are descriptive and verbatim from each compound profile — not an inference of combined effect.
What is the FDA status of Pal-GHK and Pentapeptide-18?
Pal-GHK: Cosmetic ingredient. Pentapeptide-18: Cosmetic ingredient. FDA-status text is pulled verbatim from each compound profile. See /fda-pcac-2026.html for the broader FDA Pharmacy Compounding Advisory Committee context.
Where can I find the full research on Pal-GHK and Pentapeptide-18?
Full citation lists, dosing tables from the literature, reconstitution data, and the FDA / WADA status are on the individual compound profiles: the Pal-GHK profile and the Pentapeptide-18 profile. The Kalios Stack Research Tool hub lists every compound covered.
Last updated: April 2026