Thank you for the tip! Your English is great!
I have never heard of this method. I've used cornstarch so often with horrible results, I'd about given up on a dry shampoo. I'm trying clays now, but they're working out like cornstarch.
I believe the term "groats" can be used for any (or maybe just many) grains. I'm guessing you mean oat groats, but could you post a link, or list the ingredient(s), if it's a purchased/packaged product? If you grow your own groats, maybe the Latin name of the grain?
Thanks a bunch! I can't wait to give your idea a try!