I am trying to figure out if my stinging chapped lips are a reaction to something, or are they just chapped because of the weather....? There is no cracks or flaking at the corners of my lips, just the general texture of my lips are grainy and stinging, they don't really look that different but they are stinging and hurting and the skin feels a bit thickened. I was using Burts Bees for the last year, but have stopped, and am now using Carmex. This happened last winter and is happening again now. Not had this problem so bad. Changed toothpaste, no difference. I don't use mouthwash at all.