Primalis GHK-Cu is a high-potency copper peptide serum designed to support skin repair, firmness, and overall skin vitality. GHK-Cu is one of the most researched peptides in skincare — known for boosting collagen, improving elasticity, and helping the skin recover from daily stress.

GHK-Cu is a naturally occurring tripeptide found in the body. When applied topically, it signals your skin to repair itself — increasing collagen, elastin, and glycosaminoglycans. It also calms inflammation, helps even out tone, and strengthens the skin barrier. Think of it as a “reset button” that encourages your skin to act younger and healthier.

Most people notice subtle improvements in smoothness and hydration in the first 1–2 weeks. Collagen-boosting changes typically show between weeks 3–6, with the most visible improvements — firmness, fine lines, and overall glow — appearing with consistent use over 8+ weeks.

Yes. GHK-Cu plays well with most routines. You can layer it with hydrating serums, moisturizers, and sunscreen. If you use strong actives (like retinoids or acids), apply GHK-Cu first on clean skin, let it absorb, and then continue your routine.

GHK-Cu is known for being incredibly gentle. No harsh chemicals, no irritation, no fragrance — just a clean, skin-friendly formula. Even sensitive skin usually handles it with ease.

Yes. Our GHK-Cu serum is formulated and produced in the USA in a GMP-certified facility to ensure purity, consistency, and top-tier quality.

You’re covered. If you don’t feel your skin changing — smoother, calmer, more refreshed — within 60 days, we’ll refund your purchase in full. No hoops, no hassle.

Apply 2–3 pumps onto clean skin each morning or evening. Let it fully absorb before moisturizing. Consistency is everything — the serum works best when used daily, giving your skin the steady support it needs to regenerate.