Sunscreens are rated by their ability to prevent sunburn. If you normally burn in 30 minutes in midday, midsummer, the use of an SPF 29 sunscreen would mean that you would not burn for 14.5 hours ( 29 x 0.5 = 14.5 ). A sunscreen stick used on the face will prevent burning of the eyes; sprays are much more convenient than lotions for use on the body or for hard – to- reach areas. You may prevent a future skin cancer!

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