Peptides for Skin Health
Overview
11 research peptides are currently studied for skin health. This guide ranks them by evidence strength and covers their mechanisms, safety profiles, and current clinical status.
Melanotan I (Afamelanotide) — FDA Approved
Evidence Rating: A Category: Dermatology / Approved
Melanotan I (afamelanotide, Scenesse) is a synthetic linear analog of alpha-MSH that stimulates MC1R to increase eumelanin production. Unlike Melanotan II, it is MC1R-selective and does not significantly affect sexual function or appetite. It is FDA and EMA-approved for erythropoietic protoporphyria...
Key claims: Photoprotection in EPP; Tanning without UV.
GHK (Glycyl-Histidyl-Lysine) — Early Human / Mixed Evidence
Evidence Rating: C Category: 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 function, and anti-inflammatory responses.
Key claims: Broad gene expression modulation; Wound healing acceleration.
AHK (Ala-His-Lys) — Preclinical Only
Evidence Rating: D Category: Cosmetic / Research
AHK (Alanyl-Histidyl-Lysine) is a tripeptide related to GHK that shares copper-binding properties. It has been studied for its ability to stimulate hair follicle growth and promote wound healing through collagen synthesis and growth factor upregulation. Evidence is limited to in vitro studies and an...
Key claims: Stimulates hair growth; Promotes wound healing.
AHK-Cu (Copper AHK) — Preclinical Only
Evidence Rating: D Category: Cosmetic / Research
AHK-Cu is the copper-complexed form of the AHK tripeptide. The addition of copper enhances its biological activity, particularly in stimulating dermal papilla cells for hair growth and wound healing applications. Used in topical cosmetic formulations.
Key claims: Superior hair growth stimulation vs AHK alone.
OS-01 (OneSkin Peptide) — Limited Evidence
Evidence Rating: D Category: Anti-Aging / Cosmetic
OS-01 is a proprietary peptide developed by OneSkin that targets cellular senescence in skin cells. It was identified through a high-throughput screen of peptide libraries for senolytic/senomorphic activity. Used in the OneSkin topical product line.
Key claims: Reduces skin biological age.
Rigin (Palmitoyl Tetrapeptide-7) — Limited Evidence
Evidence Rating: D Category: Cosmetic
Rigin reduces IL-6 secretion by keratinocytes after UVB exposure, helping reduce chronic low-grade inflammation in aging skin (inflammaging). It is a key component of the Matrixyl 3000 complex alongside Palmitoyl Oligopeptide.
Key claims: Anti-inflammatory skin care.
SYN-COLL (Palmitoyl Tripeptide-5) — Limited Evidence
Evidence Rating: D Category: Cosmetic
SYN-COLL mimics thrombospondin-1 activation of TGF-beta, stimulating collagen synthesis in fibroblasts for anti-wrinkle and skin-firming benefits.
Key claims: Collagen boosting.
Pal-GHK (Palmitoyl Tripeptide-1) — Limited Evidence
Evidence Rating: D Category: 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.
Key claims: Superior skin penetration vs GHK.
GHK-Cu — No Regulatory Activity
Evidence Rating: F Category: 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. Loren Pickart in 1973, plasma levels average 200 ng/mL at age 20 but decline to ~80 ng/mL by age 60. It has been extensively studied for wound heal...
Key claims: Improves skin firmness and elasticity; Promotes wound healing.
Argireline — No Regulatory Activity
Evidence Rating: F Category: Cosmetic / Anti-Wrinkle
Argireline (Acetyl Hexapeptide-3/8) is a synthetic hexapeptide marketed as a topical "Botox alternative" for reducing facial wrinkles. It works by inhibiting the SNARE complex responsible for neuromuscular junction signaling, reducing the release of neurotransmitters that trigger muscle contraction....
Key claims: Reduces wrinkle depth; Non-invasive Botox alternative.
Collagen Peptides — No Regulatory Activity
Evidence Rating: F Category: 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). They are not a single defined peptide but a heterogeneous category of bioactive peptide fragments. Multiple randomiz...
Key claims: Improves skin elasticity and hydration; Reduces joint pain in osteoarthritis.
Related Products
GHK-Cu 50mg
50mg
Related Research News
GHK-Cu: Copper Peptide in Tissue Repair and Skin Research
GHK-Cu, or glycyl-L-histidyl-L-lysine copper complex, stands out as a naturally occurring peptide central to human tissue maintenance and repair. Found in plasma, saliva, urine, and skin, its levels drop from about 200 ng/mL in young adults with age, linking to reduced regeneration. Preclinical studies highlight its roles in collagen production, wound healing, angiogenesis, anti-inflammation, and more, with the copper complex showing greater potency than unbound GHK.
Glow Blend: GHK-Cu, BPC-157 & TB-500 Peptide Research
Glow Blend combines GHK-Cu, BPC-157, and TB-500 in a 70mg multi-peptide formulation studied for skin biology, tissue repair, and cellular processes. Each component targets overlapping areas like collagen pathways, connective tissue response, and cell migration. This guide explains their research roles, molecular details, and why they pair together in regenerative studies.
BPC-157 vs GHK-Cu: Comparing Top Research Peptides
BPC-157 and GHK-Cu stand out among research peptides for their extensive studies in tissue repair and anti-aging. BPC-157, a 15-amino-acid peptide from human gastric juice, focuses on angiogenesis and wound healing. GHK-Cu, a copper-bound tripeptide from human plasma, targets gene expression and skin remodeling, with over 100 published studies.