Shampoos are full of nasty stuff and Tear free shampoos have a chemical that reduces eye sensitivity, so it's one more layer in the chemical soup. Having high sensitivity kids myself, I've tired a lot of things - Yucca root for one - it has hatural saponin and could make a great nature learning experience. Check out Vitamin Cottage or Whole Foods for some more natural possiblities. Another area to look at is diet, what goes into our bodies affects our personal scent. Omega Three fatty acids from flax or fish oil can help the dry skin from the inside out and are good for the development of the nervous system. Chlorophyll (I like the liquid, organic, regular flavor) is an internal deodorizer, mix a tablespoon or two in cold water or juice and have your kids drink it before they floss and brush at night. Double benefit - the chlorophyll will make their tongues and mouth green, if you can still see green after they brush they need to do a better job! This works wonders with older people who have smelly feet or other body odor problems. It may take a week or two to really make a difference, but once you start using it, if you stop you'll notice a difference in a few days. Just as a diet with lots of leafy greens does, it can make your poop greenish and less smelly too!