WOODBURY - With less than two weeks until Memorial Day, Consumer Reports is delivering a shocker when it comes to the advertised sun protection factor on sunscreen products.

According to Consumer Reports, 43 percent of sunscreens tested contain a lower SPF than promised on the label. Out of 65 water-resistant lotions and sprays with claims of SPF 30 or higher, 28 products tested below their advertised level.

Banana Boat Kids Tear-Free, Sting-Free and CVS Kids Sun Lotion, which are both advertised as SPF 50, only had an actual SPF of 8.

Dr. Victor Politi, of Nassau University Medical Center, says protecting your skin on a sunny summer day is paramount in preventing skin cancer.

Consumer Reports warns that using less than the minimum recommended 30 SPF could elevate the risk of sunburn, wrinkles, sun damage and can even lead to skin cancer.