Scalp density peptides
Plain-English guides to 2 peptides used for scalp density in skin care.
Acetyl Tetrapeptide-3
Scalp density
A four-amino-acid peptide often paired with biotin peptides in scalp-density formulas.
On label: Hair follicle peptide
Capixyl
Scalp density
A patented hair-complex ingredient pairing a biotin peptide with a tetrapeptide—common in scalp serums marketed for thinning hair.
On label: Biotinoyl Tripeptide-1