ThePeptide.expert
Database

Peptide profiles.

Filter by category, search by name. Each profile is graded on a five-tier evidence scale.

7 profiles

GHK-Cu

Copper peptide / Glycyl-L-histidyl-L-lysine-Cu²⁺

Cat 1 — 2026
injectabletopical
Evidence

Naturally occurring copper-binding peptide found in human plasma. Declines significantly with age. Influences over 4,000 genes. Strongest evidence base for topical skin applications.

GLOW Blend

AminoClub GLOW / Cellular Peptide Blend

Cat 1 — 2026
injectable
Evidence

A proprietary AminoClub peptide blend formulated for skin rejuvenation, cellular repair, and anti-aging. Combines synergistic peptides targeting collagen synthesis, skin barrier function, and cellular regeneration.

Melanotan II

MT-II / α-MSH analogue

RUO only
injectable
Evidence

Non-selective α-MSH analogue studied for tanning sexual function and appetite suppression. Parent compound of FDA-approved PT-141. Non-selectivity creates more side effects.

LL-37

Cathelicidin / hCAP-18 fragment

RUO only
injectabletopical
Evidence

Human host defense peptide with broad-spectrum antimicrobial and wound-healing properties. Naturally produced by immune cells. Dual antimicrobial plus healing mechanism is unique.

Argireline

Acetyl Hexapeptide-3 / Acetyl Hexapeptide-8

Cat 1 — 2026
topical
Evidence

Topical SNARE-inhibiting peptide that reduces facial expression lines by decreasing muscle contraction intensity. Often called a Botox alternative. Multiple human RCTs with wrinkle reduction data.

Matrixyl

Palmitoyl Pentapeptide-4 / Pal-KTTKS / Matrixyl 3000

Cat 1 — 2026
topical
Evidence

Signal peptide that mimics collagen breakdown fragments to stimulate fibroblasts to produce collagen elastin and fibronectin. One of the most evidence-backed topical cosmetic peptides with replicated human RCT data.

SNAP-8

Acetyl Octapeptide-3 / Extended Argireline

Cat 1 — 2026
topical
Evidence

Extended Argireline analogue with two additional amino acids for potentially greater SNARE inhibition at lower concentration. Often combined with Argireline for additive expression line reduction.