Collagen Synthesis Research Peptides

11 research peptides demonstrate collagen synthesis properties. This collection covers their mechanisms, evidence base, and research applications.

No Regulatory Activity | Skin & Tissue Repair

GHK-Cu is a naturally occurring copper-binding tripeptide (glycyl-L-histidyl-L-lysine) found in human plasma, saliva, and urine. First discovered by Dr.

Mechanism: GHK-Cu chelates copper(II) ions via its histidine residue and delivers bioavailable copper directly to cells, preventing free copper oxidative damage.

No Regulatory Activity | Healing & Recovery

Collagen peptides (hydrolyzed collagen) are a mixture of small peptides (typically 2-5 kDa) produced by enzymatic hydrolysis of collagen from animal sources (bovine, porcine, marine).

Mechanism: After oral ingestion, collagen peptides are partially digested into dipeptides and tripeptides (particularly hydroxyproline-containing peptides like Pro-Hyp and Hyp-Gly) that are absorbed intact into...

No Regulatory Activity | Cosmetic Peptide

Matrixyl (palmitoyl pentapeptide-4, Pal-KTTKS) is a lipopeptide used in anti-aging skincare. It consists of the pentapeptide KTTKS (a fragment of type I procollagen) conjugated to a palmitic acid chain to enhance skin penetration.

Mechanism: The KTTKS sequence is a fragment of the C-terminal propeptide of type I procollagen. When collagen is synthesized, this propeptide is cleaved off, and the KTTKS fragment feeds back to fibroblasts as...

No Regulatory Activity | Cosmetic Peptide

Matrixyl 3000 is a trademarked cosmetic ingredient (Sederma) consisting of a combination of two lipopeptides: palmitoyl tripeptide-1 (Pal-GHK) and palmitoyl tetrapeptide-7 (Pal-GQPR).

Mechanism: Palmitoyl tripeptide-1 (Pal-GHK) is a collagen-stimulating signal peptide that activates fibroblast collagen and glycosaminoglycan synthesis.

No Regulatory Activity | Cosmetic Peptide

Palmitoyl tripeptide-1 (Pal-GHK) is a lipopeptide consisting of the tripeptide GHK (glycyl-histidyl-lysine) conjugated to a palmitic acid chain.

Mechanism: The GHK tripeptide sequence is a fragment of type I collagen and SPARC (secreted protein acidic and rich in cysteine).

No Regulatory Activity | Cosmetic Peptide

Palmitoyl tripeptide-5 (marketed as Syn-Coll by DSM) is a lipopeptide designed to mimic the action of thrombospondin-1, a natural activator of TGF-beta. By activating TGF-beta signaling, it stimulates collagen synthesis in dermal fibroblasts.

Mechanism: Palmitoyl tripeptide-5 mimics a sequence from thrombospondin-1 (TSP-1), which naturally activates transforming growth factor beta (TGF-beta).

No Regulatory Activity | Cosmetic Peptide

Copper tripeptide-1 (GHK-Cu) is the copper complex of the tripeptide glycyl-L-histidyl-L-lysine. Note: This entry focuses on the cosmetic/dermatological use of GHK-Cu.

Mechanism: GHK-Cu delivers copper ions to skin cells while the GHK peptide acts as a signaling molecule. Copper is a cofactor for lysyl oxidase (collagen cross-linking), superoxide dismutase (antioxidant...

No Regulatory Activity | Cosmetic Peptide

Tripeptide-29 (Gly-Pro-Hyp) is the most abundant repeating tripeptide unit in type I collagen, representing the fundamental building block of the collagen triple helix.

Mechanism: Collagen consists of repeating Gly-X-Y triplets, where X is frequently proline and Y is frequently hydroxyproline. Gly-Pro-Hyp is the most common of these triplets.

Early Human / Mixed Evidence | Regenerative / Research

GHK is a naturally occurring tripeptide first isolated from human plasma. It declines significantly with age. Even without copper complexation, GHK demonstrates gene-regulatory activity affecting over 4,000 genes related to tissue repair, immune...

Mechanism: GHK modulates expression of over 4,000 human genes. It promotes collagen and decorin synthesis, regulates anti-inflammatory cytokines, and attracts stem cells to injury sites.

Limited Evidence | Cosmetic

SYN-COLL mimics thrombospondin-1 activation of TGF-beta, stimulating collagen synthesis in fibroblasts for anti-wrinkle and skin-firming benefits.

Mechanism: Mimics thrombospondin-1 signaling to activate TGF-beta pathway, stimulating fibroblast collagen I, III, and IV production without requiring UV-induced damage as a trigger.

Limited Evidence | Cosmetic

Pal-GHK is a lipid-modified version of the GHK tripeptide designed for enhanced skin penetration. The palmitoyl group increases lipophilicity. It is a key component of the Matrixyl 3000 complex and stimulates collagen production.

Mechanism: The palmitoyl group enhances transdermal delivery through the stratum corneum. Once delivered, the GHK moiety activates collagen synthesis and ECM remodeling via TGF-beta pathway activation.