Thought I'd post a tip learned from my doctor since it's pretty cold out in my neck of the woods. Super glue works very well for cracked finger tips. My hands get cold from working outside all day and split. If you carefully! coat the split with super glue, it seals it and the cut heals from the inside out. I let the glue dry and then file with an ordinary emory board or file to smooth. If the glue gets under the nail, I run the file tip under to free the skin from the nail before the glue dries.
This will not work for weeping sores or deep wounds, it is only for superficial cracks in the skin. Once a sore heals enough to quit weeping, you can put a topcoat on it for protection.
There are several types of super glue out there. The easiest to use is a "paint on" version made by Krazy Glue, like a bottle of finger nail polish. Please remember to be very careful-it will glue your fingers together if you're not. Hope this helps some of you. It's kept me working without pain. VK
PS: I also treat my hands with generic "Eucerin" (Walmart) after work is done for the day.