So I'm just turning 21 and my hairline has been slowly receding since i've been around 18. Well I tried the shampoos and serums and all that jazz and they helped a bit to make my hair feel thicker but it kept slowly getting worse. I bought the comb about 3 weeks ago and my results are already amazing. I would honestly say that my hair looks as healthy as it did 2 years ago. I can see my hairline is starting to thicken up and little hairs are already popping up all over. My blonde hair is shinier than ever and feels and looks thick all over. I have already gotten compliments on it. If you are a young guy and are worried about your hair loss getting worse-then look no further!!!!! the cost has already been worth it.