Dfx black question

I use snaz black for the linework. The only staining issue I have had is with snaz teal, however I have oily skin, so any residue on my face oils off by morning. Huh, oily skin does have one good attribute.

I once saw a pic of a dragon face that had been washed, and there was red lines were all the black lining had been, at first they thought it to be a rash, but it was a sunburn. The black wolfe paint had absorbed the sunlight. It kinda shied me from trying the wolfe since I mainly paint in the hot season.

I've had the opposite happen with white marks on my arms where my tag rose arm painting and glitter tattoos have acted as sunblock very effectively!

I'm still trying to decide which black and white I want to try next for line work. For large skin coverage I still like snaz - gentle for little ones... but would like something more opaque for line work

I've got tag white which I like for line work, so am thinking of ordering tag black too... wondering what the difference is between dfx and tag white/black , or if there is enough difference to make the extra cost worthwhile?

Presently I have dfx gold and silver which I enjoy.