Works for me
Within a short period of time I could see that the faint brow hairs at the tail end were appearing darker, so showing up more. After some months the hair was definitely growing longer and filling in to make the brows look thicker overall. Initially I was only interested in improving the tail ends, and the serum has definitely done that, I’d like the front end to have filled in a bit too but I don’t see it there.
I don’t remember to use it every night but several nights in a week.
Still, I’m happy and have repeatedly bought this now.