One of my biggest mistakes was chucking quite a bit of dry shampoo in my hair before work and ending up looking 85 years old. You will have grey hair if your hair is super greasy and you need a lot of product, so if you are traveling or just don't have access to a shower or don't have time, prepare for the next day the night before and pop the dry shampoo in your hair overnight, so it settles into your hair. Or if you have brown hair use the brown tinted shampoo. The product has a really nice scent and doesn't choke everyone in the room out when you spray it. I do find that it leaves my hands feeling so powdery and I have to wash my hands immediately after applying because I don't like the feeling of this product on my hands.
Overall I think it's a great product and it definitely works, and you can buy a travel size which is good if you don't want to commit to paying the full sized price of $13 per can.
I have to wash my hair every day, otherwise it goes very oily. It's pain in the butt! When I heard about the Batiste Dry Shampoo I was extremely skeptical and I didn't understand the concept at all. That said, I've always been very envious of my friends with beautiful locks who only have to wash their hair once every 2 - 3 days. So, I decided to try it.
It's so quick and easy to use, it just sprays on and then you can brush it through. It eliminated most of the oiliness, and left my hair feeling pretty clean. I don't think it is as thorough as using a 'normal' shampoo, but it is good to use when you don't have time to wash and dry your hair.
I now only really use this if I'm going camping, or travelling around the place, but it is a good product.