Melanotan II
Tanning & Pigmentation Libido & Sexual Function
For tanning.
GHK-Cu 50 mg
$120
High-purity GHK-Cu, the copper peptide, for aging skin. For adults who want to care for aging skin.
- 99% purity or higher
- Sterile, tested by PCR
- Non-pyrogenic, tested by LAL
- Tested in the USA
- Free shipping in Mexico
- Pay by SPEI bank transfer
Your dose, on the dial.
The dial counts in units of 0.01 mL: 10 units is 0.10 mL, and 100 units, the most one press gives, is 1 mL. How much peptide a unit holds depends on the pen’s strength, so the same number of units gives a different dose on each pen. Enter the dose your doctor gave you to see how many units to set.
Enter your dose to see the number to set.
About GHK-Cu
What GHK-Cu is
GHK-Cu is a small peptide, three amino acids long, bound to copper. It is found naturally in human blood, and its level there falls with age.
Its studies in people used serums and creams on the skin. No study has tested it as an injection.
What GHK-Cu is studied for
- Wrinkles: Studied in a trial of 40 women who used a serum on their skin for eight weeks.
- Skin after laser treatment: Studied in an independent trial of creams used after laser treatment of the skin.
What the research shows.
GHK-Cu is a small peptide bound to copper, found naturally in human blood. Its studies in people used serums and creams on the skin, and no study has tested it as an injection. Each study used its own supply, dose and schedule, so its results describe that study rather than promise what this pen will do.
Wrinkles
Small studies, Serum on the skin
In a trial of 40 women over eight weeks, a GHK-Cu serum reduced wrinkle volume more than the same serum without it.
After laser treatment
Small studies, Cream on the skin
In an independent trial after laser skin treatment, copper-peptide creams made no measurable difference to the skin, though people who used them were more satisfied.
Source: Miller, Arch Facial Plast Surg 2006 (opens in a new tab)
The wider evidence
Small studies, On the skin
A 2026 review of 20 studies of GHK-Cu on the skin found only two in which people were assigned at random to GHK-Cu or a comparison.
How every lot is tested
Every lot of GHK-Cu goes through three tests before it is sold.
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Every lot is 99% pure or more, and your pen’s exact purity is printed on its tube.
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Every lot we sell has passed the sterility test: no bacteria or other microbes were detected.
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Every lot we sell has passed the test for endotoxins, traces of bacteria that can cause fever after an injection.
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An independent laboratory in the USA runs every test.
Side effects and cautions
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No study has measured how injected GHK-Cu moves through the body and leaves it.
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Each 10 units of this pen give about 0.26 mg of copper straight into the body, past the gut. The limits set for copper taken by mouth don’t apply to injections.
Allergy warning
Don’t use GHK-Cu if you have ever had an allergic reaction to it or to anything else in the pen. Get help straight away if you have swelling of the face, lips or throat, trouble breathing, or a rash that spreads after an injection.
Pregnancy and breastfeeding
GHK-Cu has not been studied in pregnancy or breastfeeding. If you are pregnant, trying to become pregnant or breastfeeding, talk with your doctor before using it.
Medicines and health conditions
If you take any medicine or have a health condition, talk with your doctor before using GHK-Cu, and tell them you use it.
Copper
Each 10 units of this pen give about 0.26 mg of copper straight into the body, past the gut. Talk with your doctor first if you have Wilson’s disease or another condition that affects how your body handles copper, or if you take copper in other ways.
Age
For adults 18 and over.
Frequent questions
Is GHK-Cu right for me?
GHK-Cu has been studied for aging skin, in serums and creams put on the skin. No study has tested it as an injection, so no one can yet say what an injection does for the skin. Talk with your doctor before you start.
Why is GHK-Cu blue?
GHK-Cu is bound to copper, and copper bound in this way is blue, so the solution in the pen is a clear blue.
How often is GHK-Cu taken?
No study in people has set a schedule for GHK-Cu as an injection. Follow the schedule your doctor sets.
What side effects can GHK-Cu cause?
No study has measured how injected GHK-Cu moves through the body and leaves it, so its side effects as an injection are not known. Tell your doctor about any reaction where you inject it, or anything else unusual.
What testing does Pure99 complete for GHK-Cu?
Every lot of GHK-Cu is tested by an independent laboratory in the USA before it is sold. The laboratory measures its purity by HPLC, tests it for bacteria and other microbes by PCR, and measures its endotoxins by LAL. Endotoxins are the toxins bacteria leave behind even in a sterile solution, and they can cause fever and aches after an injection.
How much GHK-Cu should I take?
Take GHK-Cu only as your doctor directs: Pure99 doesn’t recommend a dose. The pen’s dial counts in units of 0.01 mL, from 1 to 100 a press, and the same number of units gives a different dose on each pen. The dose guide on this page turns your dose into the number of units to set.
How many doses are in one GHK-Cu pen?
Every pen holds 3 mL, which is 300 units on the dial. How many doses that makes depends on your dose: the dose guide on this page shows how many doses of your size a pen holds.
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