From what I understand, hair is an issue too. 
Canāt he use a bald cap or they remove it in post-production? 
I think thatās inconclusive since sheād die in return. She would have died for him, yes. But, maybe Clark stopped her?
Neither solution would look realistic probably. Post production is expensive.
They could go the Gene Hackman/Kevin Spacey route, but thatās not the Lex we know and love.