Key Takeaways:The FDA sent warning letters to five brands, including Vacation Inc. and Supergoop!, for selling unapproved forms of sunscreen.Whipped, foamed, and mousse products are not approved SPF formats in the FDA monograph.Brands must reformulate, repackage, or seek FDA approval to continue selling sunscreens with whipped textures in the US.The best sunscreen is the one you apply liberally and often. For many consumers, whipped formulations make the usually tedious process less of a need and more of a want. But a recent warning from the U.S. Food and Drug Administration (FDA) is deflating the fun from these SPF formats.On August 6, the FDA issued warning letters to five sunscreen brands, including Vacation Inc. and Supergoop!, for marketing unapproved whipped, foam, and mousse sunscreen formats, not permitted under the current FDA monograph. As a result, these products cannot be lawfully marketed in the United States without an FDA-approved new drug application.Breaking Down the FDA’s Case Against Foam SPFUnder the U.S. Federal Food, Drug, and Cosmetic Act (FD&C Act), sunscreens are regulated as drugs, which means they must adhere to specific dosage form and packaging standards. Sunscreen products are "generally recognized as safe and effective (GRASE)" and not considered new drugs if they adhere to the conditions outlined in the applicable over-the-counter (OTC) monograph.