First, it is not allowed to wear a wig. Baldness is nothing, it is not a defect.

Baldness, especially for men, we are talking about men.

Okay, baldness is beauty, right? Really, right? Okay, this is the first time I know. In any case, baldness is not a defect.

Therefore, a man should not be ashamed of this baldness. Secondly, he can do hair transplantation, there are alternatives, but it is not allowed to wear a wig.

It is not allowed to wear it, and if he wants to make wudu, he must remove it.

So he can make wudu. Front or back, it is the same.