Peptide encyclopedia
Learn every peptide. Keep the number honest.
Sequence, signal, evidence, concentration. A free encyclopedia from ION BLUE — the house that discloses 0.10% GHK-Cu and refuses a proprietary blend.
28 peptides · 5 paths · 9 biology chapters
Gly-His-Lys · Cu²⁺
GHK-Cu at 0.10%
The signal, not more. Just right.
The house peptide
GHK-Cu, without the fog
GHK-Cu
Copper Tripeptide-1
Gly-His-Lys · Cu²⁺
A naturally occurring copper-binding tripeptide. Isolated from human plasma in 1973, GHK-Cu is the peptide ION BLUE formulates at a disclosed 0.10% — a signal, not a bigger number.
Print the number.
Most labels list Copper Tripeptide-1 and go quiet. We disclose a single concentration — 0.10% GHK-Cu — because peptide signaling is concentration-dependent, and a larger number is not automatically more.
Read the argumentFive paths
Learn it in order, not as a pile of names
12 short lessons. Each ends in a check. Sign in if you want the score to stay.
Path 01
Peptide foundations
What a peptide is, how a cell reads one, and why a percentage on a label is a scientific statement — not a brag.
0/3 lessons
Path 02
The copper signal
GHK, copper, GHK-Cu, and why ION BLUE stops at 0.10%. The molecule this house is built on.
0/3 lessons
Path 03
Collagen architecture
Matrikines, TGF-β mimics, DEJ peptides — the different doors into matrix.
0/2 lessons
Path 04
Expression lines
SNARE, enkephalin, waglerin — topical peptides that try to quiet a muscle conversation.
0/2 lessons
Path 05
The ION BLUE Standard
Disclosure, one molecule, cosmetics-not-medicine. How this house asks you to read every other house.
0/2 lessons
From the catalog
28 peptides, classified
GHK
Tripeptide-1
Gly-His-Lys
The copper-free tripeptide. Same backbone as GHK-Cu, without the metal. Useful for understanding what the ligand does versus what the ion does.
Matrixyl
Palmitoyl Pentapeptide-4
Pal-Lys-Thr-Thr-Lys-Ser
A palmitoylated fragment of procollagen I. One of the most studied signal peptides in cosmetics — the template for “tell fibroblasts to write matrix.”
Palmitoyl Tripeptide-1
Palmitoyl Tripeptide-1
Pal-Gly-His-Lys
GHK with a palmitoyl tail and no copper. Often paired with palmitoyl tetrapeptide-7 as “Matrixyl 3000.”
Palmitoyl Tetrapeptide-7
Palmitoyl Tetrapeptide-7
Pal-Gly-Gln-Pro-Arg
A lipidated fragment related to immunoglobulin G. Studied for downstream inflammatory signaling in dermal cells, usually as half of Matrixyl 3000.
Syn-Coll
Palmitoyl Tripeptide-5
Pal-Lys-Val-Lys
A palmitoylated tripeptide designed as a thrombospondin-1 mimic — a different door into collagen I synthesis than Pal-KTTKS.