How many days does it take to get rid of the "Crayon Shin-chan" look after getting eyebrow tattoos?

I'm looking into getting eyebrow tattoos.

Most of the time, my eyebrows end up looking like Crayon Shin-chan's after I do it.

I am asking because I don't know how many days it will take to get rid of my Crayon Shin-chan eyebrows.

I have an important appointment in a week...

If I start now, will I be able to get rid of my Crayon Shin-chan eyebrows before then?