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UU library
Every peptide, mapped to the body.
160 compounds, from approved medicines to early research molecules. Each one filed by the system research looks at, with its regulatory status and the strength of the evidence behind it.
- Compounds
- 160
- Research summaries
- 39
- At UU
- 56
- Approved medicine71
Approved as a medicine by the FDA or the EMA for at least one indication. Approval covers the named indication and formulation only.
- In clinical trials19
In human clinical trials and not yet approved by the FDA or the EMA. Results to date are from trial populations under medical supervision.
- Research compound53
Not approved as a medicine by the FDA or the EMA. Some are registered in individual countries. Supplied for laboratory research only.
- Cosmetic ingredient17
Used as a topical cosmetic ingredient. Cosmetic use is not a medicinal approval, and most evidence comes from manufacturer and small panel studies.
Reviewed October 2026
In the UU catalog
Researched, batch-tested, ready to ship.
Compounds UU carries that have a full research summary in the library.
17 compounds
Skin & hair17
Copper peptides, melanocortins and the signal peptides used in skin research and cosmetics.
- Cosmetic
Acetyl tetrapeptide-5
Eyeseryl
Cosmetic peptide
A tetrapeptide used in eye-area formulas. Studied in small panels for puffiness and skin elasticity.
Summary pending - Cosmetic
Argireline
Acetyl hexapeptide-8
SNARE-mimicking peptide
A hexapeptide modelled on part of the SNAP-25 protein. One of the most widely used cosmetic peptides for expression lines.
Summary pending - Cosmetic
Carnosine
Beta-alanyl-L-histidine
Dipeptide
A dipeptide concentrated in muscle and brain. Used in skincare and supplements, and studied for glycation and muscle buffering.
Summary pending - Cosmetic
Hexapeptide-9
Collagen-derived peptide
A peptide modelled on repeating sequences of collagen. Used in barrier and firmness formulas.
Summary pending - Cosmetic
Leuphasyl
Pentapeptide-18
Enkephalin-mimicking peptide
A pentapeptide studied in cosmetic panels alongside Argireline for expression lines.
Summary pending - Cosmetic
Matrixyl
Palmitoyl pentapeptide-4
Signal peptide
A lipid-linked fragment of type I procollagen. Studied in small cosmetic trials for fine lines and skin texture.
Summary pending - Cosmetic
Nonapeptide-1
Melanostatine
MC1R antagonist
A nine-residue peptide that competes with alpha-MSH at the MC1 receptor. Used in cosmetic formulas for uneven pigmentation.
Summary pending - Cosmetic
Oligopeptide-1
sh-Oligopeptide-1 · EGF
Epidermal growth factor
A recombinant form of human epidermal growth factor. Used in cosmetic serums and studied in wound-healing research.
Summary pending - Cosmetic
Palmitoyl hexapeptide-12
Elastin-derived peptide
A lipid-linked repeat of an elastin sequence. Used in firmness formulas.
Summary pending - Cosmetic
Palmitoyl tetrapeptide-7
Signal peptide
A lipid-linked tetrapeptide studied in vitro for interleukin-6 signalling in skin cells. A common partner of palmitoyl tripeptide-1.
Summary pending - Cosmetic
Palmitoyl tripeptide-1
Pal-GHK
Signal peptide
A lipid-linked form of the GHK sequence. Used in collagen-focused cosmetic formulas, often paired with palmitoyl tetrapeptide-7.
Summary pending - Cosmetic
Palmitoyl tripeptide-38
Matrixyl synthe'6
Signal peptide
A lipid-linked tripeptide studied in manufacturer panels for extracellular matrix proteins and wrinkle depth.
Summary pending - Cosmetic
SYN-AKE
Dipeptide diaminobutyroyl benzylamide diacetate
Acetylcholine receptor antagonist
A small synthetic peptide modelled on a component of temple viper venom. Used in cosmetics for expression lines.
Summary pending - Cosmetic
Tripeptide-10 citrulline
Decorinyl
Decorin-mimicking peptide
A tetrapeptide designed to mimic part of decorin. Studied for collagen fibril organisation in skin.
Summary pending
The UU library is an educational reference. It is not medical advice, does not make a health claim, and does not tell anyone how to use a compound. UU products are sold for laboratory research use only and are not for human consumption. Regulatory status changes: confirm it with the relevant authority before relying on it.