The Medical Letter on Drugs and Therapeutics
				
			FROM
ISSUE 1052
    
   			ISSUE 1052
May 7, 1999
                			
                		 Issue 1052
                		
            		
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				Sunscreens: Are They Safe and Effective?
May 7, 1999 (Issue: 1052)
				Exposure to the sun can cause acute and chronic injury to the skin. Sunburn is the visible acute injury, but immunosuppression also occurs.
        			
        			
				
				
        			
				The Medical Letter is a subscriber-funded nonprofit organization that publishes critical appraisals of new prescription drugs and comparative reviews of drugs for common diseases.
				