Basal cell carcinoma (BCC) is the most common human malignancy. Both epidemiological and direct evidence have established\r\nultraviolet (UV) exposure from the sun as the most important risk factor for BCC development. There has only been one\r\nrandomized and controlled study to examine sunscreen�s role in the prevention of BCC, and no significant protective benefit\r\nwas found. This study did not address four important concepts: sunscreen abuse, sunscreen misuse, sunscreen formulation,\r\nand cumulative UV exposure. Thus, the results of this study are difficult to interpret and extrapolate with real-world sunscreen\r\npractices.
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