I started using this dry shampoo about 2 years ago, and I am happy to say, it is the best thing I've ever tried. Because of my gym schedule, I wash my hair twice a week, with using this dry shampoo in between. There are times I only wash once a week. I buy this product every time I run out. I always try to keep it stocked in my bathroom. This is the only dry shampoo that works with my hair.