Must one wash their hands if another person cut his hair?<a href="#_ftn1" name="_ftnref1">[1]</a>
Yes.
<a href="#_ftnref1" name="_ftn1">[1]</a> Kaf Hachaim 4:92

Shulchan Aruch HaRav | ❓ Must one wash their hands if another person cut his hair?

Must one wash their hands if another person cut his hair?[1] Yes. [1] Kaf Hachaim 4:92