Charles Worthington products are absolutely one of the best brands I have tried, and I especially liked their Full Volume shampoo.They are a tiny bit more pricey than your regular brands, but I guarantee you they are worth a try.
The Full Volume shampoo is amazing because it actually works. It does just that: gives you volume. Unlike a lot of products that claim to do so many things that we can't even notice, Charles Worthington manages to keep up the promise of voluminous hair.
Use the Charles Worthington Full Volume shampoo followed by their conditioner, and blow dry your hair upside down. You will see a big difference.