Always wash your hands before starting to crochet because brands dirt penetrating the fiber are difficult to remove. Rough skin up into yarn balls, which then give the tissue the look of old.
Massaging hands with cream mixed with sugar is a good recipe for polish them and soften them.
Another option is to rub or massage your hands with lemon juice and sugar, rinse with plenty of water, dry and then apply the cream. They look very soft and pleasant feeling of rest.