ghk cu copper tripeptide hair growth evidence Loss Study (2021) — Research Summary GHK-CU vs Other Copper Peptides:

Why consider GHK-Cu for your skincare needs

Avoid layering GHK-Cu with strong actives like retinoids or AHAs in the same routine to reduce the risk of irritation

This shift in temporal framing often produces better adherence and less disordered eating behavior during treatment

This decision should be made with your prescribing healthcare provider and depends on multiple factors, including how much weight you still need to lose, the severity of the hair loss, and whether correctable causes like nutritional deficiencies are contributing

These included nausea, vomiting, diarrhea, constipation, and abdominal pain, and were mainly transient and mild to moderate