A regulatory deep-dive into how GHK-Cu and SNAP-8 are classified under U.S. cosmetic law in 2026. Learn why topical copper peptide balms occupy a different legal lane than injectable peptides—and what to verify before buying.
GHK-Cu has become one of the most talked-about peptides in skincare — but its legal status depends entirely on how it's used. Here's exactly where topical copper peptides stand under US law in 2026.