What’s the difference between 3D and 6D eyebrow tattooing is a valid question, however I have no idea what the answer is as I do not claim to perform 3D or 6D eyebrows. As far as I know those terms are not technically accurate descriptions that would be applicable to any tattoo because all tattoos are strictly speaking, 2 dimensional in nature. (Please take a look at the many eyebrow photos on this website for examples of I call plain old regular eyebrow tattoos.) Furthermore, no tattoo – or whatever appellation one chooses to call it – will be immune to eventual fading.
If after this take you’re still really interested to find out about 3D and 6D eyebrow tattooing, simply seek out any technician who advertises 3D or 6D eyebrow tattooing. I’m sure it won’t be difficult to find one.