Hair-density serums combine trademarked peptide complexes with caffeine and botanicals. These are the actives shoppers compare most—decode the INCI and see product links. Showing 6 peptides below.
Acetyl Tetrapeptide-3 · Butylene Glycol complex
A patented hair-complex ingredient pairing a biotin peptide with a tetrapeptide—common in scalp serums marketed for thinning hair.
Dihydroquercetin-glucoside · Epigallocatechin gallate glucoside · Glycine
A plant-derived hair complex marketed to wake up stem cells in the follicle—often compared to minoxidil in brand copy.
Oleanolic acid · Apigenin
A flavonoid-and-peptide blend aimed at reducing hair fall by strengthening the anchor between hair and scalp.
Pisum sativum sprout extract · Pea sprout extract
A pea-sprout extract positioned as a natural alternative for rebalancing the hair growth cycle.
The lash-boosting peptide behind many brow and lash serums—often listed as Myristoyl Pentapeptide-17.
Capixyl component
A four-amino-acid peptide often paired with biotin peptides in scalp-density formulas.