Hyaluronic acid , niacinamide , and now, copper peptides is joining the skincare conversation. The key ingredient is known for encouraging hair growth and smoothing fine lines, but are the bold claims *really* true? Before you reach for that face serum (or scalp oil ), I chatted with medical experts to learn more about this buzzy peptide. Here’s everything I discovered—plus, products worth checking out.

What Are Copper Peptides?

Copper peptides are a type of peptide molecule, which is often referred to as GHK-Cu. As Mallari explains, “Your body naturally produces GHK, and when it binds to copper, it signals the skin to repair and rebuild. As we age, these levels decline, so applying copper peptides topically can help support healthy skin renewal and repair.”

What Are the Benefits

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