HomeBirth Harriet--Your dd's face looks so much like my ds2's at three months. From there, it spread everywhere. It was oozy and blistery and he scratched all the time. It cleared up only after I had completely eliminated all his allergens, including even the smallest traces. None of his turned out to be environmental--it was all food. Corn is sooo hard--it's hidden in everything: baking powder, meds (as you've discovered. We usually get ours compounded), table salt, bleached white sugar, bleached white flour. We just stopped using most processed foods; it's healthier anyway. Hmmm...seems to me I remember something about infant tylenol containing soy, too. Apples were bad; even now (he's two), I can't eat even a few bites of applesauce. Avocados, bananas...foods I wouldn't have thought to eliminate. We're dealing with: dairy, soy, egg, corn, peanut, treenut, wheat, bananas and avocados and latex, mustard, sesame, coconut, barley, buckwheat, most fruit (except blueberries), and many veggies.
Soap--when he's broken out, we don't use any. It's too irritating and it's not really necessary. I usually use a Trader Joe's brand for myself and haven't had any problems. I also switched to a crystal deoderant, to be safe. Couldn't identify the chemicals in my old one.
Just trying to brainstorm for you because I remember how hard it was to see my little one hurting like that. It was exactly two years ago, too. That first holiday season was so hard because I was trying to get used to this weird diet and didn't yet know how to make anything edible, I was surrounded by all this yummy food and couldn't eat any of it and my baby was so sick and so itchy because 1. we hadn't figured everything out yet (the turkey's injected with
WHAT?! 
), 2. it takes weeks for all the proteins to pass through first my system, then his, and 3. he just needed time to heal. So now, approaching our third holiday with this new lifestyle, it's easier. I still have cravings, but I've found some decent alternatives and my baby is so healthy now. His skin is beautiful and clear. He will still break out with even the smallest exposure, though, so I know my efforts are worth it.
Missy