Our boys have sensitive skin and are prone to itchy skin and eczema. We've found that colloidal oatmeal baths (or "Goo Baths" as the boys call it) like the one made by Aveeno help to sooth them, but they can get pricey. We were sure we could make our own, and thanks to Sharon of Good, True, & Beautiful we did!
We've wondered what exactly does colloidal mean? As Sharon says, "A colloid is a type of chemical mixture in which one substance is dispersed evenly throughout another. The substance doesn't dissolve, but is suspended in the mixture (unlike a solution in which the particles are completely dissolved). In this case, the oatmeal is pulverized into small, powder like particles that interact with water to create a milky substance." Cool!
First, buy plain, unflavored oatmeal, then grind it up in a blender or food processor until it is as ground as finely as possible. To test to make sure you have the right consistency, Sharon recommends that you add a tablespoon of the ground up oatmeal to a glass of water then stir it up. You should have a milky liquid without too much of the oatmeal settling at the bottom of the glass. If there is, continue to grind. She also recommends sifting the ground up powder to make sure you eliminate any stray big pieces.
Now you are ready or your bath! Just add a cup or so to your bath as it is filling, stir it up, and enjoy! And we found that a clean, empty Parmesan cheese container with the shaker top works great to store it in.