I love this stuff! I actually have very dry hair and so usually dont have problems with excess oil (even if i dont wash my hair for 2 weeks!), unless it is straightened, and because i need to use serum smoothers to keep it nice when its straight, it can go a bit greasy after a few days. But this dry shampoo sorts out that problem and as a result, i can easily wash and straighten my hair and have it last a whole week and still look great. I really recommend.
My sister used to wash her hair daily until she found this product. She has the opposite hair to me, very oily. Since using this she has been able to reduce her hair washing to every 3, sometimes 4 days. Her hair is looking so much healthier because she doesnt strip out the nutrients daily like she used to.