Every winter I get skin cracks beside my nail on my thumbs. Especially my right hand that I have to use constantly. They are so painful because everything you do, you keep breaking the little crack open. OUCH!
I have been using Neosporin and a bandaid to try to fix this. It's great for at night but once you have your hands in and out of water, it doesn't work very well.
My son, of all people, told me what he and his crew do for this. (He's in construction and works in the cold a great deal of the time.)
He just said, ""Try Chapstick"!
Now, anything like this, (Vaseline, Burt's Bees, Udder cream etc.) would work. The trick is to constantly put it in the crack so it doesn't dry out and split open again.
The thing about Chapstick is that you can have it right in your pocket and reapply it often.
I've used it for about a week now and mine are about healed up.
That's my helpful hint : ))