I bought two bottles of their Manetabolism hair vitamins, which is a two month supply. Before starting the vitamins, I did a length check and examined the health of my hair. I began taking the pills January 2015. I took the pills as instructed on the bottle, which was two pills a day for a month. After the first month I did another length check to see if I could see a difference in my hair. I was pleasantly surprised to see that my hair was fuller and did gain some noticeable length. Since I was pleased with the results I decided to continue to take the vitamins and started on the 2nd bottle of the vitamins. Once the 2nd bottle was finished, I took pictures to compare my hair length and health. The results were definitely amazing. I grew roughly one inch every month while taking the pills and my hair was thicker, fuller, and healthier. So these pills are speeding up my hair growth tremendously!