Despite Claims, Nanoparticles Can’t Penetrate Skin
Research by scientists at the Univ. of Bath is challenging claims that nanoparticles in medicated and cosmetic creams are able to transport and deliver active ingredients deep inside the skin.
Nanoparticles, which are tiny particles that are less than one hundredth of the thickness of a human hair, are used in sunscreens and some cosmetic and pharmaceutical creams. The Bath study discovered that even the tiniest of nanoparticles did not penetrate the skin’s surface.
Read more: http://www.laboratoryequipment.com/news/2012/10/despite-claims-nanoparticles-can%E2%80%99t-penetrate-skin