Seems like BlueGen in hair dressing salons make sense. There are plenty salons that could benefit in the same way.
BlueGenUK
Second hair dressing #salon with a #BlueGEN this time a training salon at #Edinburgh College
12/11/2014 10:17 am
And a link mentioning it:
http://www.edinburghcollege.ac.uk/welcome/services_and_amenities/Elemis_and_Wella_Academy.aspx