According to guidelines released in 2011 by the Food and Drug Administration (FDA), a sunscreen can claim to prevent skin cancer if it has a sun protection factor (SPF) of 15 or higher and offers broad-spectrum protection against both ultraviolet A (UVA) and ultraviolet B (UVB) rays as proven by a standardized test.
A broad spectrum sunscreen with an SPF lower than 15 must carry a warning that it does not protect against early skin aging or skin cancer.
According to guidelines released in 2011 by the Food and Drug
Administration (FDA), a sunscreen can claim to prevent skin cancer
if it has a sun protection factor (SPF) of 15 or higher and offers
broad-spectrum protection against both...
More
Dr. Mehmet Oz answered:According to guidelines released in 2011 by the Food and Drug Administration (FDA), a sunscreen can claim to prevent skin cancer if it has a sun protection factor (SPF) of 15 or higher and offers broad-spectrum protection against both ultraviolet A (UVA) and ultraviolet B (UVB) rays as proven by a standardized test.
