Use Extra Caution Near Water, Snow and Sand as theyreflect the damaging rays of the sun, which can increase your chance of sunburn.
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Environmental factors like water and sand can also increase your likelihood of sun damage. These surfaces can reflect up to 80 percent of UV radiation, so the sun's rays are hitting you twice.
AND YES, THE WATER DOES INTENSIFY THE SUN'S RAYS.Not only that, but the sun's rays reflect off of beautiful white sand, too. But this isn't the sole reason why you experience more sun and worse sunburns at the beach. This science, combined with all the factors mentioned above, are to blame.
While everyone enjoys their time in the sun, we'd advise taking a break every now and again. Use umbrellas, beach tents or natural shade to protect yourself when the sun's rays are strongest – between 10 a.m. and 4 p.m.