Can anyone help. I had a client today who had faded tattooed eyebrows and wanted them tinting. She didn't have much hair to tint and the right eyebrow tattoo was thinner than the left. I explained that she didn't have much hair to tint so it would tint her skin. I use refectocil tint with the cream peroxide., left it on for 10 mins. The right eyebrow did not tint at all. I replied tint for another 10 mins and it still never took, even the skin didn't tint. I'm baffled, I've never tinted over tattooed brows before and can't understand why just one didn't take. The client wasn't happy and didn't pay. Can anyone please explain why this happened? Thanks in advance.