@MsSanz92, I've been using them for 4 months just about to start my 4th bottle. I began using them the 2nd week of December. I chose them over other vitamins like Hairfinity, Vivascal and Manetabolism because they have more hair enhancing ingredients in their formula. HairProductComparison.com has a good side by side review with Hairfinity and Vivascal.
I'm including comparison pics below. The first in the blue LC shirt is before I started HLV in November. My lighyly blow-dried hair was at the 6/7 line. The second is my YE length check in the red shirt, first is lightly blow-dried hair and the second is flat-ironed stretched hair. The last pics are from my LC in March. All told in that time I've gotten about 2 inches of growth. HLV is the only supplement I've taken consistently. In the beginning I took MSM but had to stop because of issues with my period.
I've had no issues with breakouts but I also increased my water intake and try to drink a gallon of water a day. I have a 64 oz water bottle that I fill up twice each day. I've had no stomach issues. This month I've added 2 additional supplements so I can honestly say I believe HLV definitely was a major contributor to my growth. During the last 3 months I also stopped using heat. Probably more info than you wanted but hopefully it helps. I would definitely say they are worth trying. I plan to take them for a year and re-evaluate. They just had a sale and I got another 6 month supply for $25 per bottle.
Let me know if you have questions!