Review (5/5): A great product, even for beginners!
I have never tinted my brows before and usually use a medium brown brow pencil, but this kit in dark brown was perfect. The manufacturer specifically recommends NOT using it for brows, so if you are sensitive I would recommend doing a patch test. I did a patch test first which didn't show any reaction, and have never had a reaction to dyes before so I was comfortable using it on my brows.
I mixed the powder with the developer, let it sit for about a minute, and then applied to both brows at once, starting at the tails and working my way in.
I made sure to apply very lightly towards the middle where my brows meet, and added extra to saturate the arches and tails while I let it sit. I had it on for about 6 minutes, from when I first started applying. Then I washed it off with soap and warm water.
Some tingling sensations, but no burning and my skin didn't get red, after 15 to 20ish minutes those were pretty much gone. It does stain the skin so I was very careful to stay inside the lines where I would normally fill my brows, and if I did spill over, to wipe it off right away. It also says to not use on skin that has been freshly waxed, plucked, or shaved, but I plucked my eyebrows a few hours before I applied this tint and it was fine.
The instructions say to add a full capsule of powder into the mixing bowl they give you, but after doing it once I know I could easily do only 1/2 a capsule for both brows, possibly even 1/4, so it should last me more well over 20 applications.
The patch test on my wrist has so far stood up to multiple hand washings, at least 2 direct scrubbings with soapy water and a towel, and one scrub with straight isopropyl alcohol with only minimal fading. So even though I know the skin on my face will exfoliate faster, I am confident it will last.