08.06.07
Patent No. US 7,244,416 B2: A sunscreen composition comprising avobenzone, zinc oxide in an amount from about 6-25% weight and sufficient phenylbenzimidazole sulfonic acid to stabilize the avobenzone against photodegradation, wherein the composition does not contain a diester or polyester of a naphthalene dicarboxylic acid has been patented by Schering-Plough Healthcare products, Memphis, TN.