ghk-cu vs ahk-cu
ghk-cu (S-tier) vs ahk-cu (C-tier). mechanism, trials, claims vs data, dosing literature. side-by-side reference.
ghk-cu — tier S
the copper peptide with the strongest skin evidence in the catalog. topical record first, injectable story thinner.
the copper peptide with the strongest cosmetic skin record on the site. the topical evidence is in front; the injectable story is a different conversation.
4,192 genes modulated · half-life tissue-dependent, ~12 hours detectable · skin
ahk-cu — tier C
copper tripeptide for hair growth, riding GHK-Cu's reputation. thinner evidence, bigger marketing.
copper tripeptide for hair, inheriting GHK-Cu's 'copper peptide' marketing reputation without the receipts.
topical hair regrowth signal · half-life short free-peptide plasma half-life; copper complex stability and topical penetration are the relevant pharmacokinetic properties in cosmetic use · skin
at a glance
reptides grades the research record and cites the literature behind every call. research reference only; not medical advice.