Hi All, I've also suffered split skin in Wintertime for years. Initially I thought it was caused by cold but now I believe it is caused by(or certainly exacerbated) by low humidity. I wear powder-latex gloves which make the hands sweat and seems to help,even overnightsometimes!!!!!!. For the splits, I close them over with "paper-stitches" which helps them heal. On occasion I have even closed them with superglue (cyanoacrylate adhesive aka crazyglue). Not a "cure" by any means, but maybe a workaround?