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Sun Protection Report

By: Karen A. Newman
Posted: December 5, 2006, from the December 2006 issue of GCI Magazine.

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A major challenge for sunscreen marketers has long been how to get products to hold up against water and perspiration. In October, Eastman Chemical Company introduced Eastman AQ 38S polymer to improve the water-resistance of sunscreens. A water-dispersible polymer, it also has enhanced film-formation properties that contribute to even skin coverage in lotion and pump-spray formulations. Eastman reports that recently completed in vitro and in vivo tests compared the performance of prototype lotion and pump-spray sunscreens that included Eastman AQ 38S against leading commercial SPF 30 products. As measured by SPF retention, the prototypes outperformed the commercial formulations, according to the company.

“These results lay a solid foundation for the development of extremely effective, next-generation sunscreens,” said Jim McCaulley, PhD, global market development manager, personal care ingredients at Eastman. “Formulating with Eastman AQ 38S contributes to uniform film coverage with increased water resistance for extended SPF protection.” In addition, both the prototype lotion and milk-lotion spray formulated with Eastman AQ38S have a noticeably nongreasy feel, an important product attribute for brand owners, according to McCaulley.

Sunburn Repair

Researchers at the University of Bath in England announced results of laboratory tests of a new sunscreen ingredient that actively repairs sunburned skin and helps prevent the onset of skin cancer.

According to a press release, while conventional sunscreen lotions act as filters for UVA and UVB light, the new ingredient releases an active ingredient that “mops up” free iron that is released when the skin burns, reducing inflammation and pain of sunburn and preventing the build up of harmful sunlight-generated free radicals.

They expect to test on human volunteers in the next two to three years.

Nanotechnology Examined