Others say they are
The vasodilatory effects of dopamine have been utilized to treat bronchial asthma and chronic obstructive pulmonary disease
Use Cases: When Each Route Fits Topical GHK-Cu -- Localized Skin and Hair Goals The evidence supports topical use for: Facial aging and wrinkle reduction -- the most clinically validated use case, with multiple controlled studies Post-procedure recovery -- documented benefits after CO2 laser resurfacing Hair and scalp health -- community reports describe topical application to the scalp, though controlled hair-specific studies are limited General skin quality -- increased density, thickness, elasticity, and collagen documented in clinical studies Common audience: users primarily targeting cosmetic skin outcomes with the strongest available evidence base and the simplest application method
doi: 10.1016/j.nicl.2018.07.011 51 CockshellSJMathiasJL
Data Extraction Management A literature search was conducted covering studies published between 2016 and 2025 using platforms including PubMed, Web of Science (WoS), Scopus, and Google Scholar
Despite the many insights provided by the existing research, many unknowns remain
