This review found that nanoparticles in skincare products can deliver active ingredients deeper into skin and provide longer-lasting effects—but here's the catch: how they actually work, how deep they penetrate, and whether they're safe for human health aren't fully understood yet. Nanoparticles are already in many cosmetics (sunscreens, anti-aging products) and treatments for conditions like acne and psoriasis, but the research on potential risks is incomplete.

This was a literature review that examined existing research on nanoparticles in topical skincare products, focusing on how they penetrate skin, their mechanisms of action, and their use in treating various skin conditions and anti-aging applications.

Funding not disclosed in abstract