Can copper peptides boost collagen by 70%? Here’s what the science says

Skincare aficionados are always on the lookout for the next anti-ageing innovation, and copper peptides have quietly emerged as a frontrunner. Collagen creams, vitamin C serums, bakuchiol, retinol… The cosmetics industry continues to expand its arsenal to target the first signs of ageing and satisfy the most dedicated skincare enthusiasts. One of the latest ingredients gaining traction? Copper peptides, now considered one of the most effective anti-ageing actives. Here’s everything you need to know about their origin, benefits and how to incorporate them into your routine.

What are copper peptides?

Naturally produced in the body, peptides are molecules made up of amino acids—the building blocks of proteins. Their mission? Like microscopic bricks, they help build essential proteins such as collagen and elastin, which are key to maintaining skin’s structure, texture and elasticity. Among the billions of peptides in existence, one has captured the attention of skincare experts: the copper peptide GHK-Cu.

Discovered in 1973 by Dr Loren Pickart, this particular peptide stands out for its extraordinary anti-ageing power. Copper peptides are known to stimulate collagen production, helping to preserve the skin’s firmness and slow the visible effects of ageing. According to a 1998 study by the Faculty of Medicine in Reims, collagen production increased by 70% after just one month of application, compared to 40% with tretinoin.

Promising multi-action power

Because they are naturally present in the skin, copper peptides bring a broad spectrum of benefits: enhanced healing, improved elasticity, increased radiance and firmness, reduced appearance of fine lines, protection against UV-related damage, and smoother skin texture overall. In short, copper peptides offer a versatile and effective approach to skin ageing, earning their place as a standout ingredient in modern skincare. To introduce them into your routine, start with every other day to let your skin adjust, and gradually increase use based on your skin’s response.