penis head has flaky white skin and dry

Hi everyone, I have had this for about a month now. I'm uncircumsised, and I'm not sexually active (so no chance of STD etc) but my penis head is often dry. I have flakey white skin on it, and this isn't just after masturbating. I also have it when I don't masturbate and I have tried using moisturiser on it for several days and when it didn't seem to work. How else could I get rid of it? I never masturbated with lube, and it was always ok. So I don't know what cause it.. but for a while I did use a really watery lube to try and see if it was better (before I had the dry skin) and I stopped using it, could that have dried me penis out? Anyway, it doesn't hurt me, but I would like to know how to treat it and maybe why it happened. Thanks