A scalp brief that only says “anti-grey peptide” is still not a sample request. Palmitoyl Tetrapeptide-20 is a palmitoylated tetrapeptide positioned for hair and scalp leave-ons—not a dye and not an injectable. In a topical formula its job is the follicle environment associated with melanin pathways and oxidative load. It does not coat the hair shaft the way a colorant does.
The trade name most buyers attach to this search is Greyverse. That commercial material uses a more specific amide INCI in glycerin and water. How the trade name, the amide, and a neat powder line up is in Greyverse Means Palmitoyl Tetrapeptide-20 Amide in Solution.
What the peptide is doing on the brief
Published descriptions of the Greyverse material, whose peptide INCI is Palmitoyl Tetrapeptide-20 Amide, list actions around melanin synthesis, melanin transfer, and catalase-related handling of hydrogen peroxide. Those points describe a pigment pathway. They are not a promise that every finished product will reverse grey hair, and they do not transfer to a factory powder until the COA shows the matching sequence and form.
Do not brief this peptide as a hair-growth drug, and do not brief it for injection. The cosmetic use is a topical scalp or hair product.
What this site’s powder locks
The grade on this page is a white to off-white lyophilized powder, HPLC purity ≥98%, water-soluble, with listed stability around pH 4.0–7.0. Suggested use for the neat powder is about 0.005–0.05% (about 50–500 ppm). Add on cool-down, below 40°C, into the aqueous phase. Avoid strong oxidizers that can cleave the peptide. Confirm temperature and pH against the TDS.
The product page notes pairing ideas such as Biotinoyl Tripeptide-1 when the brief wants density-oriented peptides beside pigment-pathway work. That is still a second SKU and a second COA.
Powder percent is not solution percent
A percent taken from a pre-diluted Greyverse-type solution cannot be copied onto a high-purity powder. The same numeral can mean the whole solution or the peptide alone. Set the pilot from the peptide content and form on the COA you buy. The full trade-name gate is in the Greyverse note linked above.
What to send before the first sample ships
Put these lines in the message to the supplier:
- INCI Palmitoyl Tetrapeptide-20, and whether the brief actually requires the amide
- Amino-acid sequence in writing
- Physical form: neat powder (≥98% if that is your brief) or a glycerin/water solution
- Peptide content and method; cool-down below 40°C and pH window
- Bench-sample pack size, plus COA, SDS, and TDS with the shipment
Batch documents and a sample are available from the product page. Match the sample COA to the guest formula, then scale.
