It gives quick results which don't last very long
I have used this for years, but the whole "lasts for up to six weeks" claim should be taken with a huge grain of salt.  Once the dye paste is on my eyebrows, it's a quick three to four minutes to produce good results, but it lasts MAYBE seven to ten days before I need to re-do it.  Still, it doesn't take long and I can dye my eyebrows on a Monday morning before work if I haven't managed to get it done Sunday afternoon.  The capsules contain a generous amount of powder, so I will split a capsule to increase the number of applications.  Worth the money, I'd say.
Rating: 4 stars