GHK-Cu explained: the copper peptide, and why 3 doses a week works
GHK-Cu is a naturally occurring copper tripeptide (glycyl-L-histidyl-L-lysine bound to copper). It circulates at high levels when you are young and drops sharply with age, which is why it turns up in so much regenerative research. Our pen delivers 50 mg, dosed three times a week.
What GHK-Cu actually does
GHK-Cu is best described as a repair signal. It tells tissue to rebuild rather than supplying a building block itself.
- —Skin: stimulates collagen and elastin production, improves firmness and thickness, and supports faster wound remodelling.
- —Hair: research shows enlargement of hair follicles and extended growth phase — the same mechanism behind copper-peptide hair products.
- —Inflammation: it dampens inflammatory signalling and acts as an antioxidant, which is part of why irritated skin calms down early.
- —Structure: it supports the extracellular matrix, the scaffolding that keeps skin from looking thin and crepey.
Why 3 doses a week beats daily
GHK-Cu is often run as a daily injection. We dose 2.5 mg three times a week instead, for two practical reasons.
First, stable levels: at this size, each dose keeps circulating peptide inside a useful band until the next one. You avoid the sharp peak-and-trough pattern of small daily shots.
Second, adherence: three injections a week is a protocol people actually finish. Seven is not. The best protocol is the one that gets completed for twelve straight weeks.
The protocol: 3 dials, 3 times a week
Set the dose dial to 3. That is 2.5 mg. Do it three times a week on a fixed schedule — Monday, Wednesday, Friday works well.
- —3 dials = 2.5 mg = one dose.
- —Three doses per week, ideally with a rest day between.
- —Wipe the pen tip and the skin with an alcohol pad before injecting.
- —Inject subcutaneously a few inches from the belly button.
- —Refrigerate between doses.
One pen is one month
At 2.5 mg three times a week you use 7.5 mg per week, so a 50 mg pen carries a full month of doses with headroom left over. It is sized so the first month is covered end to end without rationing.
Stacking it with GLP-3 RT
Rapid weight loss and skin quality pull in opposite directions — losing fat quickly can leave skin looking loose and thin. Running GHK-Cu alongside a GLP-3 RT protocol is the most common reason people buy both.
Add both pens to the cart and AED 100 comes off automatically at checkout.
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GHK-Cu Pen — AED 499
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View the GHK-Cu pen →Frequently asked
How much GHK-Cu is one dose?
3 dials on the pen, which delivers 2.5 mg. Three doses per week.
How long does one GHK-Cu pen last?
The 50 mg pen covers a full month at 2.5 mg three times a week, with a little left over.
When will I see results from GHK-Cu?
Hydration and calmer skin in the first two weeks, visible texture and firmness changes from weeks 3-6, hair density changes from week 6 onwards.
Can GHK-Cu be used with a GLP-3 RT pen?
Yes — that combination is why we offer the two-pen bundle discount.