To smoothen rough and bumpy skin, begin by drinking at least 2 liters of water a day. Then using a loofah or body brush and some shower gel, give yourself a good exfoliation using circular motions. This will prevent in growing hair and slough away dead skin cells. While your skin is still damp, apply a rich moisturizer.
The best scrubber to exfoliate the dead skin is sea salt, its natural and cheap. It is good for normal skin.For sensitive skin you can use sugar as a scrubber, as it is smoother then salt.