Vaseline (Petroleum Jelly)
Oldie-moldy vaseline is a powerful moisturizer. Treating your hands with it will produce a significant therapeutic effect.
You will not need much for this mask either. Take a wink of vaseline and apply a light layer of it onto your hands just before going to bed. For better result, put cotton gloves on. Repeat this nightly, and in a few days your hands will be totally restored.