Sunscreen that doesnt penetrate the skin
Posted on: 01/Oct/2015 11:16:27 AM
Researchers at Yale University have developed a sunscreen that does not go into the skin. The sunscreen, made of nanoparticles, will help avoid any health concerns that may occur due to the its use. Many over the counter products enter the bloodstream through the skin. This results in hormonal changes and, in extreme cases, some kinds of skin cancer.
We found that when we apply the sunblock to the skin, it doesn`t come off, and more importantly, it doesn`t penetrate any further into the skin... Nanoparticles are large enough to keep from going through the skin`s surface, and our nanoparticles are so adhesive that they don`t even go into hair follicles, which are relatively open, said one of the researchers.
The studies were conducted on mice which were tested under direct ultraviolet rays and indirect exposure to UV light. Commercial chemical sunblock is protective against the direct hazards of ultraviolet damage of DNA, but might not be against the indirect ones. In fact, the indirect damage was worse when we used the commercial sunblock... Little research has been done on the ultimate effects of sunblock usage and the generation of ROS, but obviously, there`s concern there, said a professor of dermatology at Yale.
