Review (1/5): Updated review
Update 04/29/2020 - I cannot tell any difference in my hair or eyebrows. It was like putting water on, so not sure what the mixture is supposed to do or how quickly, but you should at least see some results with one bottle.
In my original order I lost 1/4 of the product in shipping. The lid was tight but it leaked through the dispenser. However, they were kind enough to send out another bottle which was received with no issues. Keep in mind these are small bottles, so you will only be able to use in a small area if you are to see any results. I used the first one down the part of my hair from crown to front as well as on the sides so I only got about a weeks worth of use out of it. Since I have a larger area that needs attention in addition to my eyebrows, I'll give it a try on my eyebrows. I'll come back and update the review if indeed it helps with them.