Hair Growth Articles

After testing 8 leading copper peptide hair growth serums on concentration, clinical evidence, delivery method, and value, Hairgenetix is our Summer 2026 pick — the highest conc...

Key Findings at a Glance A topical spray combining GHK peptide with 5-aminolevulinic acid (5-ALA) produced 52–72 extra hairs per cm² in 6 months — while the placebo group g...

Key Findings at a Glance GHK-Cu is a naturally occurring human peptide that influences 31.2% of all human genes — resetting gene expression toward a healthier, younger sta...