It's by Tigi and it's their Rockaholic "Dry Shampoo". Now, the idea of dry shampoo is definitely not new, it's been around for ages. But this is the new version. It is amazing! I absolutely love it. On the days that I round brush my hair out straight, I use this the second day. I just run the blow dry through my hair to warm it up and then spray this in small sections right at the roots. Then I round brush just to touch up and heat up the product. It absorbs the oil and product from your hair and allows it to look fabulous! Takes all of the weight out and is a miracle product ;) Seriously, now that my hair is longer and takes about 30 minutes to blow dry, this is my new best friend. I don't want to creep anybody out, but I've actually been known to use it for third day hair. You'll love it. Try it. If you need it, let me know. I'll hook you up.
p.s. The only downside I have noticed is when I am using it constantly. Like three days a week. It tends to dry out the scalp too much. You do need some of your natural oils to keep everything from drying out and causing itching and such. So, use it sparingly and enjoy!