My mom intruduced me to this product over the weekend.  She's used Bumble and bumble products for years, but they've always seemed a little pricy for my taste.  However, my mom got this at The Cosmetics Company Store outlet, so the price was right for me (free!) and for her (about $15 for 1 oz.). 

The 1 oz. container is a spray can, and I used the color Brown (I have dark brown espresso-colored hair.)  I applied the product just like I would a dry shampoo, parting my hair and spraying in short bursts every few inches along the front and crown areas of my hair.

After just one use, I love the B & b hair powder because it acts like two products in one:
1. It's like a dry shampoo.  It soaks up any oil from your roots and adds volume and texture as well.
2. It's like Toppik.  (If you're not familiar with Toppik, it's a colored powder you sprinkle on your roots to camoflauge any hair loss or fine/thinning hair.)  The B & b powder does exactly the same thing, but better. It's heavily tinted, so it really covers any "bald spots" and makes your hair appear thicker and fuller with no gaps.

Because of the color of the powder, you should be careful when spraying if you're using brown or black, as it could get on clothing, linens, etc...However, it appears that it does wash out easily if that does happen. I did get a little on my fingers, and it washed off with no problem.

The hair powder can be purchased on Bumble and bumble's website as well ($35 for 4.4 oz.).
They are currently running a promotion for FREE SHIPPING on all orders as well as 3 free samples (plus free gift wrap if you're buying as a gift).