@seawulf575 When I dye my hair at home I use it to dye my eyebrows also. I guess I’m not too worried about that. I’m very careful when I do it, but technically it’s not to be used on the eyebrows.
The chance of the scalp burning is low, but some people do have a bad reaction to the dye.
An irritation on my scalp is hidden by my hair, a cut on the face, is on the face.
I see what you are proposing with your analogy, but I guess I think of them differently, because you can use a typical razor, which is less likely to have an accident then an open blade. Hair dye, if we want our hair dyed there isn’t really many choices except that some have different ingredients than others.
There is some risk with all grooming and beauty treatments I guess. I did a laser on my face and neck that I am very unhappy with the results. I didn’t do the rest of the treatments. I did hair removal laser that I’m very happy with. A friend of mine did hair removal, and whatever laser they used she was burned badly.
The answers above made me realize that for some men it’s a treat. It sounds like it feels relaxing, and when you walk away they feel refreshed maybe