Sunscreens are intended to be used regularly and applied liberally over the body. That’s why the FDA imposes strict guidelines on active ingredients.
The FDA has issued these industry sunscreen guidelines. Companies must provide a
Maximal Usage Trial or MUsT, to see how an ingredient is absorbed into the blood. This is the same approach the FDA uses for approving topically applied drugs.
“We hope the final guidance encourages industry to provide the FDA with the data we need, so that together we can help bring a wider assortment of safe and effective sunscreen products to the public,” says the FDA.
This new document is in line with the FDA’s Sunscreen Innovation Act (SIA) which sets processes for monitoring the safety and effectiveness of nonprescription sunscreen.
Click the link to download the FDA sunscreen guidelines