Higher standards have also been set before sunscreen companies may claim they reduce cancer risks and early aging.
A survey of 1,400 sunscreen products by the Environmental Working Group finds that most products meet new federal requirements put in place last December, according to The Associated Press. Some consumer groups are saying the changes do not go far enough.
Those in disagreement say people see an inflated SPF number and get a false sense of security, which may cause them to stay in the sun for longer periods of time.
The FDA says it is reviewing rules about capping SPF numbers above 50.
Many consumers assume that SPF 100 is twice as effective as SPF 50, but dermatologists say the difference between the two is actually negligible and an SPF 50 product might protect against 97 percent of sunburn-causing rays, according to The Associated Press.
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