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There are two distinct ways patients use it, and theyre not the same product: Topical cosmetic GHK-Cu is available over-the-counter in countless skincare products serums, creams, eye products

Tau: From research to clinical development

The FDA can take it or leave it," Tatem noted

Presented for research literature review only Quenby S et al

Many people notice a calmer feel first, with less tightness and a smoother surface in four to eight weeks, while bigger texture shifts can take three to six months with steady use

Full 2026 regulatory status, Category 2 reclassification updates, compounding regulations, and published research