From Where ( which point )and how do i wipe my head?
And many videos on YouTube claimed that 3 fingers are supposed to be used when wiping ones head

by

LAW: 256
The part on which wiping should be performed, is one fourth frontal part of the head. It is sufficient to wipe as much at any place in this part of the head, although the recommended precaution is that the length should be equal to one finger, and it’s breadth should be equal to three joined fingers.