Goddess Journal ... of Radiant Skin Every Day

Copper Peptides in Skin Care: What to Know

Learn what copper peptides are, what current evidence suggests, how to choose and introduce a formula, and which claims deserve caution.

How to Choose and Use a Peptide Serum

Learn what topical peptides are, how to evaluate a peptide serum, what evidence can show, and how to layer peptides with moisturizer and sunscreen.

Copper Peptides in Skincare: What the Evidence Supports—and What It Doesn’t

Copper peptides such as GHK-Cu are widely used in firming skincare, but clinical evidence is more limited than marketing often suggests. Learn what researchers know, what remains uncertain and how ...