The answer is yes, especially if you have weak, brittle nails. You should occasionally go without polish for a few days to allow your nails to breathe. Lotions and cuticle oils can work better on unpolished nails to moisturize and strengthen them. You should always be moisturizing after washing your hands, taking a bath or doing the dishes. Take an extra few seconds to rub the moisturizer in and round the nails. At the very least, you should moisturize with a heavy cream before you go to bed.