Infinity Challenge/Running Man‘s Ha Dong Hoon (HaHa) asked his twitter followers whether or not he should cut his hair off. He asked, “Everyone, should I cut my hair? Should I really cut my hair? Cut it all off? If I get over 50 mentions and replies, I’ll cut it.“
나 머리 자를까요??여러분!! 나 진짜 자를까요???확 잘라??지금부터 멘션 댓글 연달아 50개이상이면 자릅니다!!
— ha dong hoon (@Quanninomarley) June 8, 2013
As a result of that twitter post, HaHa has cut off his signature hairstyle. The proofs are those pictures above.