I have quite thin hair and like to use henna products to thicken and strengthen it. My hair tends to an uninteresting brown colour. I like to enhance it with natural looking shades and highlights. I have experimented with various products that contain less chemicals than commercial products or none at all. I really like a brand called Logona which uses a combination of henna, nutshells, tea leaves and other ingredients. The result was very good and lasted for more than 6 weeks. I also tried Herbalife and Naturstyle, which I can also recommend. What do you use?