As the hands are vulnerable, it is wise to use hand creams that contain sunscreens and moisturizers like
vitamin E. Use only a mild and bland cleanser like Cetaphil to wash the hands. You may increase absorption of the moisturizer by putting on moisture gloves that may be available in some stores.
And yes, drink plenty of water, eat well, get enough sleep and avoid prolonged washing of the hands.
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http://lesstoxicguide.