If one began a haircut before Chol Hamoed, may he complete the haircut on Chol Hamoed?<a href="#_ftn1" name="_ftnref1">[1]</a>
Yes.
<a href="#_ftnref1" name="_ftn1">[1]</a> Kapei Ahron 51 [Aharon Halevi Epstein 1933]; Chol Hamoed Kihilchaso 3:6 [p.122]; Piskeiy Teshuvos 531:2; See P”M 531 A”A 12

Shulchan Aruch HaRav | If one began a haircut before Chol Hamoed, may he complete the haircut on Chol Hamoed?

If one began a haircut before Chol Hamoed, may he complete the haircut on Chol Hamoed?[1] Yes. [1] Kapei Ahron 51 ; Chol Hamoed Kihilchaso 3:6 [p.122]; Piskeiy Teshuvos 531:2; See P”M 531 A”A 12