Batiste dry shampoo sells on Amazon. I think the price is very good. Please read some of the reviews and see what people thought of the product. Check how you might qualify for a free shipping offer if available.

• Use Batiste between washes to instantly refresh your hair, no water required
• Waterless formula absorbs dirt and grease to revitalize dull and lifeless hair
• Sweet & Delicious Sweetie scent leaves hair smelling great
• Not tested on animals & vegan-friendly
• 3 steps to fabulous hair: spray from 30cm away into roots, massage throroughly and brush to remove excess