the man that ran the salon is louises husband and they were both going away to get out of that new mans way (the one that tryed to kill him) but in the end louise said she wanted to stay so he went to start a new life some where else and now loise is the manager of the salon and that new man just makes sure everythings ok!
That new man (Warren) now owns the salon as Louise's husband (Sean) gave it to him.
Apparently when they lived in Ibiza,Sean stiched up Warren over dogy deal or other and Warren served time in prison.
When he got out, he tracked Sean down to Hollyoaks and started demanding loads of money off him otherwise he was going to kill him. Sean didn't have the money so basically gave him the salon and legged it.