What is GHK-Cu?

GHK-Cu (glycyl-L-histidyl-L-lysine copper) is a naturally occurring tripeptide found physiologically in human plasma, saliva, and urine. It has a high affinity for copper ions (Cu²⁺) and forms a stable bioactive complex involved in various cellular and tissue processes.

The GHK-Cu complex was initially identified as a factor related to tissue repair and regeneration, and its concentration in the body was observed to decrease with age. This underlies the increased scientific interest in the peptide in the fields of dermatology, cosmetic science, and regenerative biology.

GHK-Cu is known for its role in tissue regeneration, wound healing, stimulating collagen and elastin synthesis, as well as its antioxidant and anti-inflammatory properties. In dermatological and cosmetic practice, it is used as an active ingredient in serums, creams, and lotions, and in scientific models, it is also considered for potential systemic effects.

Observations with GHK-Cu

GHK-Cu is being studied in connection with numerous biological and physiological processes, including:

Skin Regeneration – associated with stimulating the synthesis of collagen, elastin, and other structural components of the dermis, as well as improving skin elasticity and density.

Wound Healing – accelerated processes of epithelial and connective tissue repair have been observed, as well as better organization of newly formed extracellular matrix.

Hair Growth – researched in connection with the activation of hair follicles, prolongation of the anagen phase, and improvement of microcirculation in the scalp.

Effects on Skin Appearance – associated with reducing fine lines, improving skin tone, and overall skin condition.

Anti-inflammatory Action – shows the ability to modulate local inflammation and reduce oxidative stress in cellular and tissue models.

Organ Protection – experimental data are available for protective effects on the liver, lungs, and nervous system in various models of damage.

Improved Blood Supply – associated with stimulating angiogenesis and improving tissue nutrition.

Recovery After Surgical Interventions – considered as a factor supporting the healing of surgical wounds and post-traumatic recovery.

Administration and Dosage

Different dosing regimens have been described in the scientific literature depending on the goal and research model, including both subcutaneous and topical application. Total weekly doses in the range of 5–10 mg, divided into 2–3 applications, are most frequently cited.

For 100 mg + 3 ml bacteriostatic water:

Concentration = 33 mg/ml → 0.1 ml = 3.3 mg

Example values for 100 mg:

0.05 ml = 1.67 mg

0.1 ml = 3.3 mg

0.2 ml = 6.6 mg

Scientific Data

In dermatology, GHK-Cu shows the ability to support the restoration of skin structure, increase collagen synthesis, and improve parameters related to the elasticity and thickness of the dermis. In individual clinical and cosmetic observations, a reduction in wrinkle depth and improvement in skin texture have been reported.

In trichology, effects on stimulating hair follicles, limiting hair loss, and improving scalp condition have been reported, with most of the data originating from preclinical models and limited clinical observations.

In gastroenterology and hepatology, protective effects on liver tissue, reduction of inflammatory markers, and improvement of regenerative capacity have been observed in experimental models.

In neurology, GHK-Cu is being investigated for its potential to limit neurotoxic damage and support nerve tissue recovery, including through the modulation of oxidative stress and inflammatory processes.

Additionally, experimental data have been published on the effects of pulmonary regeneration and the limitation of fibrotic processes in various organs.

Possible Side Effects

Reported adverse reactions in clinical models are rare and usually mild, transient, and localized:

• slight redness at the application site

• temporary local discomfort or sensitivity

• headache

• fatigue

Less frequently, changes in skin pigmentation or mild irritation have been described, depending on individual sensitivity and the concentration used.

The information is collected and systematized from various scientific publications and studies. It is for educational purposes only and should not be used for the diagnosis, treatment, or prevention of diseases.