The Environmental Working Group has come out with their 2012 sunscreen guide. Check it out at this link:
This organization has rated sunscreens with a variety of criteria and come up with the best and worst ones.
Now, keep in mind, those of us with sensitive children know that we can use the very best product on the market and it may give our kid a rash. My daughter gets a different rash from different sunscreens each year. What works one year, doesn’t necessarily work the next. And what works for her, almost certainly gives me a rash!
Make sure you do a patch test on your sensitive kid to see how their body tolerates the sunscreen. Put a little sunscreen on the inside of the arm or wrist and wait at least 24 hours to observe for reactions. 3 days is even better.
Also, remember, that sensitive kids experience the feeling of sunscreen on their bodies differently than not-so-sensitive people. Even if you can’t see a rash or problem on the skin, the scent of the sunscreen or the texture may be awful for them.
Good luck and feel free to let me know which products were okay for your kid’s body.