My girl has always loved different colored hair and she picked out a gorgeous pink color at rite aid…

My girl has always loved different colored hair and she picked out a gorgeous pink color at rite aid the other night but it’s more permanent and really expensive 😅 so I found this instead. It’s pretty much like paint for her hair. It’s from the dollar tree and literally washes out as soon as soap and water get on it but she LOVES it. So far she’s had blue, purple, and now pink. Any suggestions on a better route? I’m not sure if they make kids hair dye or if there is another place I can get something similar to this in different colors? The only issue I have with this is it makes her hair look so dirty once it’s dry but she obviously doesn’t care lol