Is there a way to get trans-mapped hair to show the sort of semi-transparent backlighting that occurs in real life when edges of hair are lit from behind. The absence of this effect is one of the tells that can reveal fakeness. Also, hair has a shiny highlight that reveals the strands. Baking in the highlight isn’t adequate for a texture that will stand up in all lighting conditions. I’m thinking a bump map combined with a specular setting might create something like this. Is there an established approach to solve either of these issues?

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