UPDATE ok so I got the brow flick in black, and it works pretty well on my brown brows.  I have quite a specific use for this, as one brow keeps “falling” during the day and looking weird and uneven. I have found that this works really well at staining the skin so it doesn’t matter that my natural brow hairs have deserted me for the day. If I look really up close I can see it, but honestly who’s looking at your brows that closely. 

I haven’t used felt tip pens in my brows before today but I found it very easy to use. I started very light and gradually built up until I got a feel for the pigment and feel of it. It is lasting better than my other brow products tbh so I’m impressed. Hopefully they don’t run out quickly :)