So You Typed “Buy AHK-Cu for Hair” Into Google. Here’s What You’re Actually Looking At.
Quick answer: the compound most hair-focused shoppers land on is AHK-Cu, a copper-binding tripeptide, and the honest truth is that the human evidence for it is much thinner than the product pages let on. The one decision that actually protects you isn’t which brand has the prettiest label. It’s whether you get it through a…