Eyebrow tattoo disappeared after 1st session of laser removal, then reappeared a few hours later with a different color? (photo)

When removing tattooed eye and lip makeup, a laser may first oxidize the color that’s present so that it changes to a different shade or hue. Eventually, the PicoWay laser will fade your tattoo completely. You need to be patient with tattoo removal. It’s a long-term process that takes many months — usually more than a year. Consulting with a board-certified dermatologist will get you the best results.

Cosmetic often times turns colors due to oxidation of the ingredients inside the ink. Sometimes you can use a different wavelength to get the new color to come out. At other times cosmetic inks are a blend of reds and blacks. When you remove the black color the red appears and it can be hit with the red laser (this may oxidize at that point), then you hit it again with black ink laser to get the rest of the ink out.

The ink used for cosmetic purposes has different substances in it and in some instances oxidize into a different color. I refuse to laser brown or red brow tattoos because they oxidize into a blackish color that is very difficult to remove.I always start with a test spot in a little corner of the brow to note any color change.In your instance now that this happened I would continue treatments these oxidized inks should come out but It will likely take a longer time

Laser removal of tattooed makeup can be particularly challenging because the inks used are different than the ink for body or decorative tattoos . Often times the patient (and the person applying the tattoo makeup) don't have a good idea of the exact ingredients in the ink. Many of the inks used in tattooed makeup contain iron, which when lasered can oxidize and turn the tattoo into a rusty brown or black color. With many repeated laser treatments this oxidized pigment can fade over time, but it will likely take several treatments. 

When removing cosmetic ink, whether it is on the lips or the eyebrows or anywhere else, it usually changes to a different color. So what you are experiencing is completely normal. Black ink usually turns into a brown orange color. Red ink actually turns black. This is not the same for body tattoo ink. However this is typically seen for cosmetic tattooing used on eyebrows lips eyeliner etc.