I was SO excited to try this product since I have such fine, thin hair. I was immediately disappointed, but did finish off the bottle to see if my views would change, they didn't. The smell was so strong that it would start to give me a headache just for the 2-5 min it was left on my scalp. Once I got out I felt like my hair was so dry and brittle. I didn't notice any change in my hair thickness or any sort of stimulation other than it seemed like I had way more fall out when I brushed it for the next month of so. Absolutely would never purchase.