GHK-Cu (Glycyl-L-Histidyl-L-Lysine copper peptide) is a naturally occurring peptide with various potential benefits, including
 
Skin Health: 
Stimulates collagen and elastin production, improving skin elasticity and firmness.
Reduces wrinkles and fine lines.
Promotes wound healing and tissue regeneration.
Protects against oxidative stress and inflammation.
Hair Growth: Enhances hair follicle growth and thickness, Prolongs the hair growth phase (anagen), and Reduces hair loss and breakage. 
Anti-Aging: 
Delays cellular aging and promotes stem cell activity.
Protects against age-related damage to skin, hair, and other tissues.
Improves overall skin structure and appearance.
Other Benefits: 
Supports immune function.
Reduces pain and inflammation.
Promotes nerve regeneration.
May have potential benefits for treating certain types of cancer and neurodegenerative diseases (requires further research).