It could be Keritosis
Polaris (kp). It is a hereditary disease that is caused my the overproduction of kerotine in the skin. About 40% of the popualtion (including me) have it. I have used coconut oil, just rub it all over the areas and let it soak in, and glycerin wiht rosewater, do the same as coconut oil, use lots of lotions, and anything with uric acid, and then make sure you exfoliate your skin ALOT. You cant even notice that I have mine anymore.