Copper Peptides for Hair Growth: AHK-Cu Explained
Thinner, weaker hair usually starts at the root. Here's how the copper peptide AHK-Cu feeds the follicle to grow thicker, stronger strands.
When hair starts thinning or feels weaker than it used to, it's tempting to reach for a thicker shampoo. But hair isn't made at the surface — it's produced by a living structure deep in your scalp called the dermal papilla. As that structure slows with age or stress, the hair it makes comes out finer and snaps more easily. To improve the hair, you have to look after the root.
What AHK-Cu actually does
AHK-Cu (Copper Tripeptide-3) is a copper peptide developed specifically for hair. Massaged into the scalp, it reaches the dermal papilla and helps switch those cells back into an active state.
Every hair moves through a growth phase called anagen, and as the scalp tires, that phase gets shorter — so hairs fall out sooner and grow back finer. AHK-Cu helps extend the growth phase, keeping each hair anchored and growing for longer. The result over time is hair that comes through thicker, denser and more resilient.
How to use it
Because it works at the root, AHK-Cu is the core of our hair-density serums. Pelt (Woad) and Crown (Aurora) both deliver a high dose of copper peptides straight to the scalp. Massage in nightly on a clean scalp — it absorbs cleanly with no greasy residue. If you're also fighting shedding, pair it with RU58841 (Shield Wall or Follicle Sanctuary): stop the loss, then feed the growth.
Give it a full cycle. Hair changes are gradual; the people who see the biggest difference are the ones who stick with it nightly for a few months.
