I find
Eulactol HEEL BALM gold works really well , you use it twice a day , try and pop socks on a after for while as well, and in between I use coconut oil which I find works really well ..
I also do regular foot scrubs , made with coconut oil or olive oil mixed with sugar or bicarb and give my feet a good scrub and then lather on the cream , I do the scrub a couple if times a week , works wonders for hands and face as well