Tafsir of Al-Mu'minoon 23:104

تلفح وجوههم النار

The Fire will burn their faces, This is like the Ayah:

وتغشى وجوههم النار

and fire will cover their faces. (14:50) and:

لو يعلم الذين كفروا حين ﻻ يكفون عن وجوههم النار وﻻ عن ظهورهم

If only those who disbelieved knew (the time) when they will not be able to ward off the Fire from their faces, nor from their backs. (21:39)

وهم فيها كالحون

and therein they will grin, with displaced lips. Ali bin Abi Talhah narrated from Ibn Abbas, "Frowning.''