Most people cutting hair

According to Official Guinness Records,

The most people cutting hair is 1,214 and was achieved by UNITED DANKS INTERNATIONAL (Japan) at Yokohama Arena, Yokohama, Kanagawa, Japan, on 11 November 2014.

For a complete list of 2014 records, please visit 2014 Guinness Records in Japan.

Other Japan records that might interest you:

• Most participants in a table tennis rally
• Tallest Mohican/Mohawk spike
• Most live TV episodes of a variety show hosted by the same presenter
• Longest running live TV variety show (episodes) same channel
• Fastest time to complete three games of Daruma Otoshi
• Longest chain of plastic bottles in 24 hours
• Oldest active commercial pilot