My knuckles will get bad from washing my hands too much and working with the shortening. When I have a buttercream cake that I don’t use shortening for, my hands never suffer. But when using shortening for fondant cakes it does something to my hands. I just try to remember to lotion my hands up before bed every night and if I do it’s not so bad. I know it is going to sound strange, but try using Lansinoh Lanolin cream on your knuckles. It helps wonders and is 100% natural.
Tiff - MA www.facebook.com/sweetbeecakery