Soaking the hands in 3% hydrogen peroxide for 30 minutes may cure the
problem.  Then follow with emu oil and maybe even some neem oil too.  If you
can stand the smell.  Neutrogena hand cream is also very effective if left
on overnight.  This is after the peroxide soak.    If the first 30 min. does
not result in a cure,  surely it will give great results and can be followed
in a couple of days or sooner, with another 30 min. soak.    Hope this
helps.  I feel real confident it will.  pj