Review (4/5): Amazing product but  be careful!
Last about 3-4 days for me since I have oily skin and use oils in my daily skincare regimen. If you have sensitive skin, I recommend using this at the end of the day or when your face has produced some oil to protect it from getting a reaction (similar to when you bleach your hair). Mistakenly, I used this after washing my face and my skin reacted so badly from the dye that it ended up burning and scabbing the area. One capsule is like 3 separate dye process for me so I just pour enough for one process and put the rest back in a mini baggie. Next, my dye process in 3 different application. 1-2 minute just to get a light overall shape, the 2nd application for 3-4 minutes follows the shape guidelines, 2-3 minutes for details/touch ups. If the front of the brows ends up coming out too blocky, just use a qtip with some makeup remover to fade out the front to make it look more natural. Since it fades so fast on my skin, I usually just let the first day brows go dark bc it lightens significantly because of skincare/face washing.
Update:
I had stop using it so frequently (every week) bc if felt like my skin was getting more and more sensitive from it. I noticed that the more frequently I used it the more of an allergic reaction I got from it. I had to stop using it for a couple of months and have tried it again. I probably won’t be using this as an everyday routine but only for special occasions.