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First of all,the reasons for wrinkled hand and fingers would be the following
1.Allergic to detergents or dish liquids
2.Prolonged use of hands in water(like washing,mopping(with hands)) etc
For the first 2,using of hand gloves will prevent furthur damage.Third is not in our hands.
There are specially formulated creams for hand which shows good results.I use Avon products for hand and foot.
If nothing works,just wear good looking bangles and rings to underplay u r negatives.And select dresses which has full hand to cover it.