National Starch Personal Care has presented a technical solution designed to expand the use of inorganic UV filters in water resistance sunscreen formulations.
Data indicate that sunscreen formulations manufactured with a special rheology modifier (Amaze XT) and a film forming polymer (Dermacryl) have, in combination, served to significantly boost the water resistance properties of titanium dioxide and zinc oxide. Several formulations were tested in vitro and in vivo and it was found that the water resistant sunscreen products remained stable, delivering water resistant protection.
The research findings pave the way for makers of sunscreen products to incorporate inorganic UV filters into water resistant beach wear, sports wear and daily wear formulas without technical challenges.
