This review found that nanoparticles (tiny engineered particles) show promise as delivery systems for skincare and medicine—they can penetrate skin better and release ingredients over time. However, the authors emphasize a critical gap: safety and environmental impacts of these particles haven't been properly tested yet, and need specific toxicology studies before widespread use in cosmetics.

This was a literature review published in 2011 that surveyed existing research on nano-applications in dermatology across different particle types (lipids, metals, polymers) and their tested uses in animal models.

Funding not disclosed in abstract