GHK is a research compound. It is not approved by the FDA or any regulatory body for human use. This article is for educational and informational purposes only. Nothing here constitutes medical advice. Consult a qualified physician before considering any peptide use.
GHK (Glycyl-L-Histidyl-L-Lysine) is a Collagen-modulating tripeptide researched for skin regeneration support, collagen precursor activity, wound healing support. Common dosages range from 1-3 mg (similar to GHK-Cu protocols) administered once daily. Below are the most frequently asked questions.
Frequently Asked Questions About GHK
What is GHK?
GHK (Glycyl-L-Histidyl-L-Lysine) is a Collagen-modulating tripeptide. Endogenous human tripeptide found circulating in plasma; this is the copper-free form of the GHK-Cu complex. It is researched for skin regeneration support, collagen precursor activity, wound healing support.
What is the recommended GHK dosage?
Common dosages range from 1-3 mg (similar to GHK-Cu protocols), administered once daily via topical or subcutaneous injection. Cycles typically run 4-12 weeks.
What are the side effects of GHK?
Zero human safety data for copper-free GHK specifically. GHK-Cu shows minimal side effects. Topical irritation possible.
Is GHK legal?
Available as research chemical and cosmetic ingredient.
What is the half-life of GHK?
The half-life of GHK is unknown for copper-free form, which determines the once daily dosing schedule.
How do you reconstitute GHK?
Add bacteriostatic water to the lyophilized GHK vial. Let the water run down the side — never spray on the powder. Swirl gently. Use our peptide calculator for exact amounts.
Can you stack GHK with other peptides?
Best used as GHK-Cu (copper-bound form) paired with vitamin C and retinoids in skincare protocols.
Where can you buy GHK?
GHK is available as a research chemical from vetted suppliers with third-party COA testing.
How long does it take GHK to work?
Initial effects may be noticed within 1-2 weeks, with more significant results typically appearing by weeks 4-8 of a 4-12 weeks cycle.
What makes GHK unique?
Critical distinction: copper-free GHK is a fundamentally different molecule from GHK-Cu. Copper appears essential for most biological activities — the copper-free form is essentially uncharacterized in humans despite being marketed based on GHK-Cu studies.
Complete Guide
GHK : Benefits, Dosage, Side Effects & Research
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Frequently Asked Questions
What is GHK?
GHK (Glycyl-L-Histidyl-L-Lysine) is a Collagen-modulating tripeptide. Endogenous human tripeptide found circulating in plasma; this is the copper-free form of the GHK-Cu complex. It is researched for skin regeneration support, collagen precursor activity, wound healing support.
What is the recommended GHK dosage?
Common dosages: 1-3 mg (similar to GHK-Cu protocols) administered once daily via topical or subcutaneous injection. Cycle length: 4-12 weeks. Half-life: unknown for copper-free form. Use our peptide calculator for exact reconstitution math.
What are the side effects of GHK?
Zero human safety data for copper-free GHK specifically. GHK-Cu shows minimal side effects. Topical irritation possible.
Is GHK safe?
GHK has shown a preliminary safety profile in research. Available as research chemical and cosmetic ingredient. All research should follow appropriate safety protocols.