My 2.5yo son is suffering from very dry skin this winter. I plan to take the obvious steps of switching to natural soap and natural laundry detergent. But just wanted to try and brainstorm a list of other things that people have found to affect their skin. After tomorrow I will have a good chance to keep all wheat out of his diet for quite a long stretch. And we're about to start a CSA so we'll have more organic food around. But I'm wondering if there's something I'm missing as a possible allergen to cause these skin problems.

Thanks!