GHK-Cu is a copper peptide that naturally occurs in the body and plays a major role in skin regeneration, hair growth, and tissue repair. Its often included in cosmetic creams and anti-aging serums because it helps stimulate collagen and elastin production”two key components for youthful, healthy skin. When used in injectable form, GHK-Cu can go beyond surface-level beauty benefits. It may help with wound healing, reducing inflammation, and protecting the body from oxidative stress. Some users report improvements in hair thickness, skin firmness, and even a brighter, more even complexion.