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GHK-CU vs AHK-CU

27 replies11 peopleMay 20, 2026☆ Follow
Summary

What differences do people notice between GHK-CU and AHK-CU for skin versus hair, and how long do results take?

Users report GHK-CU mainly improves skin texture, reduces wrinkles and hyperpigmentation, and helps prevent loose skin after weight loss, while AHK-CU is discussed more for hair thickness and new growth. Results from either appear slowly, often requiring months of consistent use. Some combine GHK-CU with microneedling or try injecting AHK-CU, with mixed personal observations on effectiveness.

What this discussion establishesWhere people disagree

Whether GHK-CU offers any meaningful hair benefits at all

Still open

Best way to apply either compound topically or via microneedling, and whether cosmetic-grade powder works as well as other forms

Nothing here is advice.

27 replies · 11 people
GreenKettle22archiveopening postMay 20

Has anyone seen good results from ghk-cu compared to ahk-cu kits? Do you think you're getting benefits? What differences stand out? I've read that GHK-CU works better on skin while AHK-CU targets hair.

SteadySignal41archiveMay 25

It'd be awesome if anybody gave a reply to the query you raised.

LevelTimber64archiveMay 25

The version aimed at hair growth stands apart from the one focused on skin. Replies could be missing since lots of earlier discussions already cover what these deliver. Checking via the built-in search option turns out very effective.

LevelBeacon78archiveMay 25

After using GHK-cu for roughly four weeks, some darkened patches on parts of my complexion have started to lighten.

IronSparrow67archiveMay 26

This item needed a while before delivering noticeable effects yet made a huge difference overall. I kept applying it steadily without rushing and eventually caught my reflection one morning which left me stunned.

GreenKettle22archiveMay 31
↳ replying to @IronSparrow67

Maybe the period of use was too brief for any real changes. Once that bottle was empty the main effect remained just the sharp feeling. I really should grab some kits.

ClearBeacon24archiveMay 31
↳ replying to @GreenKettle22

Results only showed up for me after several months had gone by.

GreenKettle22archiveMay 31
↳ replying to @ClearBeacon24

I've come across similar info myself. Any differences stand out for you?

ClearBeacon24archiveMay 31
↳ replying to @GreenKettle22

I dropped well over a hundred pounds without ending up with any sagging skin.

RustBeacon82archiveMay 31

I'm currently using two milligrams each day, and now I'm curious whether preparing a liquid mixture for needle application on my belly and upper legs could boost the effects. I have just a little bit of sagging skin, so even minimal firming would be worthwhile. Has this approach been tried by others? Must it be in pure form, or could one blend a container's contents together with HA?

LevelTimber64archiveMay 31

Sounds like a cool concept. Should you decide to experiment, snap some pictures personally. It would be great to hear about your experience afterward. Microneedling is something I haven't attempted so far. The thought excites me yet also makes me nervous.

GreenKettle22archiveJun 14
↳ replying to @ClearBeacon24

Man I guess it's time to start dealing with this.

GreenKettle22archiveJun 14
↳ replying to @LevelTimber64

I have gotten the supplies for accomplishing that. I require the GHK-CU formulated for topical application.

LevelBeacon32archiveJun 14
↳ replying to @LevelTimber64

Does it have any minor effect on hair too?

LevelTimber64archiveJun 14
↳ replying to @LevelBeacon32

From what I've noticed this gets labeled mostly as the support framework inside skin. Let me know if you see the description another way.

LevelTimber64archiveJun 14
↳ replying to @GreenKettle22

I went ahead and bought some myself. Then I whipped up a basic hyaluronic acid mix. Online reports say it works gradually and stays pretty mild. Waiting has never come easy to me.

GreenKettle22archiveJun 14
↳ replying to @LevelTimber64

Yesterday evening I bought some pure cosmetic GHK-CU. Locating the AHK-CU version proved difficult.

SlowBramble67archiveJun 17
↳ replying to @GreenKettle22 (opening post)

My spouse applied that copper peptide for nine weeks straight. She noticed nothing different at all. Yet I spotted the light lines near her eyes and mouth fading away almost completely. Her complexion appears more even and radiant now. I tried two bottles of the other peptide mixed as a topical with needling sessions but saw zero improvement. Instead I've been putting it directly beneath the scalp each day using small insulin needles for the past month. Recently I've spotted fresh hairs coming in and the strands seem denser with each passing day. I underwent a transplant procedure overseas a year ago which turned out well except the density wasn't ideal. Things are improving on that front now. The approach matched what worked for the first peptide. Nobody has mentioned using this one by injection into the scalp before. The seller suggested the same method as the initial one. Exploring the scalp injections came from my own experiments. This is merely what happened to me personally rather than any suggestion for others. The sensation isn't enjoyable either. I stayed silent earlier since nothing stood out until lately.

SlowLedger21archiveJun 17
↳ replying to @GreenKettle22

Did you find it? A couple places carry topical versions.

SlowBramble67archiveJun 18
↳ replying to @LevelBeacon32

People claim this stuff works. My spouse has tried the product and noticed thicker hair lately. At the same time she takes those collagen supplements for over half a year to get the same effect. Hard to know which one actually made any difference.

GreenKettle22archiveJun 18
↳ replying to @SlowBramble67

Are the shots done across lots of different areas or always at that one location right by the hairline?

SlowBramble67archiveJun 18
↳ replying to @GreenKettle22

I'm seeing a fresh mark show up daily, though they stay limited to the top surface.

LevelAlder29archiveJun 18
↳ replying to @RustBeacon82

After looking at various costs myself, the beauty quality version of GHK-Cu turns out far more affordable compared to the small bottle when applying on skin. A single gram ends up costing below what you'd pay for a big container of whey supplement. Really hoping someone replies regarding the skin puncturing technique since it appears quite appealing!

GreenKettle22archiveJun 19
↳ replying to @SlowBramble67

Let me know how it goes. The results are something I'd really like to learn about. I have some thinning and am considering trying it out. From what I've seen, injections aren't commonly used by many, though getting a topical version of it is very challenging.

GreenKettle22archiveJun 19
↳ replying to @LevelAlder29

I came across an affordable beauty powder that didn't cost much including delivery. There must be lower rates available somewhere. It's been tough locating the AHK-CU version except from a site that has it super inexpensive, and that worries me. You can't really tell if it's genuine, but the same issue probably affects everything like this, you know.

SlowBramble67archiveJun 19
↳ replying to @GreenKettle22

This stuff really works well when hair starts getting thin. Fresh hair roots could show up after getting a transplant done. Still I believe the cause is that copper peptide. I saw zero new ones appearing during the past few months.

GreenKettle22archiveJun 19
↳ replying to @SlowBramble67

Sounds wonderful. I might experiment with it.

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