GHK-Cu

GHK-Cu is a copper peptide complex that occurs naturally in human plasma, saliva, and urine. It declines with age, which is part of why it's become popular in the anti-aging and skin rejuvenation space.

It stimulates collagen and glycosaminoglycan synthesis, promotes wound healing, and has antioxidant and anti-inflammatory effects. People use it both topically (in serums and creams) and via subcutaneous injection for more systemic effects.

Injectable doses typically range from 1 to 4 mg daily. It's a common component in healing blends alongside BPC-157 and TB-500, where it adds the skin and tissue rejuvenation angle.

For skin improvements (texture, firmness, fine lines), most people start seeing changes around weeks 4 to 6 with consistent use. Hair quality improvements, if they happen, take longer — usually 2 to 3 months.

For wound healing and post-procedure recovery, the timeline is faster. People report accelerated healing within the first couple of weeks. Injectable use tends to produce more noticeable systemic effects than topical, though topical is plenty for localized skin concerns.

Very few reported side effects. Injection site irritation is the most common. Some people notice a metallic taste after injection, likely related to the copper component. Mild stomach discomfort has been reported occasionally.

Excessive copper supplementation can be problematic in general, so don't go overboard on dose or duration. If you're also taking copper supplements or have Wilson's disease, consult your doctor first.

Refrigerate after reconstitution at 36 to 46°F. GHK-Cu is light-sensitive, so store it in a dark place or keep the vial wrapped. Reconstitute with bacteriostatic water and use within 28 days.

The copper gives the reconstituted solution a faint blue tint, which is normal. If it's a strong blue or changes color significantly, something's off.