Sean M. writes: “I get cracks in my thumbs from working and have tried many things in the past to alleviate them: adhesive bandages and Triple Antibiotic, expensive hand creme, lots of regular hand cream, etc. I’ve finally found my cure — fake fingernail glue. Yup, the stuff women might use to glue fake fingernails on is the ticket. The best way to use it is to put on triple antibiotic (like Neosporin) and cover it with an adhesive bandage for a couple hours. Wash well with soap and dry thoroughly. Simply put a drop on the crack and wait the couple seconds it takes to dry. I used to use regular cynocrylate glue but it stings a little bit. The fingernail glue doesn’t sting at all.”
I’ve heard of drummers and guitarists using this technique as well, though I’ve always been loathe to expose open wounds to this type of adhesive. But hey, I’ve seen others use it.