Did you know that there has been some controversy about whether or not sunscreen reduces all types of skin cancer? Melanoma prevention specifically was the subject of debate. Australian researchers recently reported findings that will make it harder for naysayers to continue arguing though. These researchers found that 10 years after a group of Australian adults were asked to use sunscreen daily, the incidence of invasive melanoma was decreased by 73%! The sunscreen used by the study group was SPF-16.