The Fire reached for his hands at first, for a few seconds he was observing portions of this raging Tornado and afterwards his arms started glowing because they began to be surrounded by Fire without burn marks as an aftermath that is, his clothes weren't burning up either which is a good thing. No one wants to see anyone else naked!
The Fire spread from his arms, headed towards his shoulders and then spread to his chest as if it followed his veins. His clothes were replaced with nothing but Fire and it seems like his skin and bones shared the same result. But he isn't feeling any pain, he feels and is quite in Control!
The Fire spread to his neck and then his head too, thankfully it expanded to his Hair without burning a single one. No one would want those beautiful black long hair destroyed unless that person had some sort of envy towards them.