Reddit mentions of all Liquid Laundry Detergent, Free Clear for Sensitive Skin, 100 Fluid Ounces, 60 Loads

First, see a dermatologist. Ask them about allergy testing (which is often administered by an immunologist). You could try removing dairy, wheat, and even soy from your child's diet on your own and monitor the effect. The dermatologist might administer antibiotics - I've been on erythromycin, sulfamethoxazole-tmp, clindamycin and also minocycline and doxycycline (both which provide not only anti-bacterial but also anti-imflammatory properties) so you may want to ask about those. They may also prescribe some variety of cortisone - it's a pretty standard treatment for atopic dermatitis. If you also want something prescribed that's steroid free, be sure to ask them about:

http://www.atopiclairasia.com/about-atopiclair

I use atopiclair on my face and it's highly effective.

For over the counter products, try cetaphil soap (restoraderm line is also great), and for creams:

eucerin soothing repair cream:
http://www.drugstore.com/eucerin-original-healing-soothing-repair-creme/qxp16896

eucerine dry therapy calming cream:
http://www.drugstore.com/eucerin-dry-skin-therapy-calming-creme/qxp87512

Also, be sure to wash clothes and sheets with a mild detergent like:

http://www.amazon.com/All-2x-Free-Clear-100-ounce/dp/B00440ZGBU/ref=cm_cr_pr_product_top

Now, for a personal aside: I just want to tell you how much I empathize with you and your child. I'm 26, and I've dealt with eczema all my life. My condition is compounded by chronic folliculitis mixed in with my eczema, which leads to more severe infections - boils so severe that it hurts to walk, it hurts to sit, it hurts to sleep. My skin has been red and my body riddled with pain. I've spent hours sobbing, cursing god, and desperately searching for a solution. I've found no easy answers, no quick fix. But, the universe gave me a gift - two of the most wonderful people I know: my parents. They guided me through the hardest times in my life, provided me with strength when I felt only weakness, and offered unconditional love even when I lashed out in anger and despair. I just wanted to express the profoundly positive impact parents can have on someone with a devastating condition like atopic dermatitis.

Things do get better - my condition has improved as I've aged. And, there are many effective treatment options on the horizon (if your child's condition doesn't fade away completely as he gets older, which it commonly does). Most notably:

http://www.cbsnews.com/news/breakthrough-therapy-could-help-millions-with-eczema/

Microfiber list looks pretty good! You may want to add a few of these for other various purposes so you don't use your nicer more expensive towels for extra dirty stuff like around your exhaust or wheels/wheel wells/in your engine bay. Also I'm pretty sure you can get a bucket with a screw on lid at home depot for pretty cheap, but all in all it's not a bad kit because it comes with the soap and grit guard and wash mitt. As for the bucket for your supplies, again I'm sure there's something cheaper at home depot.

Chemical guys makes some pretty good stuff and some pretty bad stuff. They're more of a marketing brand than a good detailing product brand. I'd replace the glass cleaner with Stoner Invisible Glass...can also be found at walmart or autozone usually.

Their degreaser is good and can be diluted so it should last a while. Never used their wheel cleaner, but it looks okay. The microfiber detergent isn't necessary really, just get something like this for a lot cheaper. Just make sure you wash your microfibers separately and DO NOT use fabric softener on them. Be aware that some detergents have fabric softener mixed in. Do not use those detergents. The tire brush is good, but you may also want one like this to get into the inside of your wheels more.

It's quite possible I've been using too much. This is the detergent that I use, I canb't find any info on the measuring cup, but I'd wager the 3-4 lines run 1/4+ cup. I also use about the same amount of non-chlorine bleach in every load. I did discover I was putting the detergent in wrong, after the clothes instead of before.