Wait ... that pic on the left is real?

I seriously thought someone badly photoshopped that hair color on there because his scalp is also as blue as his hair in a very straight set of lines.

If you get that professionally done, I'd think they'd be careful not to. But I don't dye my hair, so I have no idea if that kind of thing happens with dyes you'd want to keep off your skin, and just on the hair.

Makes me wonder now if you can tell by the scalp instead of the hair that it's been dyed. I guess I don't pay enough attention to the appearance of others to notice these things until there's a still image I can look at and not be a creep by staring.