Right now with the hair salons you can only go to get haircuts. It would be cool if instead of a hair salon if we could have the option for said bussiness type to be more complete? like instead of a place where you would get haircuts you could choose from a wide variety of services. This being getting your make up done, having your hair washed/blow dried, having your nails done, etc. Right now at least for me it´s kind of an underwhelming experience and dont really have my zois going and getting their hair done cause i dont always want them to have their hair cut (and most of the time it doesnt turn out very well). But yes, all in all, I just think it would be cool if the bussines type could come with a wider variety of services to offer the zois in town. I still have not tried playing as a bussiness owner with this bussines type, but as of right now I think that could maybe add up to the experience and make going to the salon more fun (english is not my first language so I apologize in advance but thank you for your time! 
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This is a good idea! I think there are many services that they can offer in a hair salon:
- Hair dye: Choose it as a service, choose the color have it changed without going into CAZ. If the hairdresser skill is low, maybe the color turns out different.
- Wedding prep: The game could offer a selection of updos and elegant hairstyling for men that only appear if you choose this option in the hairdresser. Extra drama if the hairdresses messes up on your big day.
Example ; Incompetent hairdressers can create terrible hairstyles. 
Thank you to everyone who responded, I really agree with the ideas 
Another thing I forgot to mention is that, in addition to all of this, I think the system for the hair salons/beauty salons could be improved. As I said before, I haven’t explored owning a hair salon yet, so I’m not sure how it’s currently implemented from that perspective. However, I think it would be great if there was a more structured system in place.
For example, Zois who want to receive services at a hair or beauty salon could be required to make an appointment (maybe by calling or scheduling it through a calendar). There could also be rules tied to that system. For instance, clients could only be up to 15 minutes late, and after that, stylists would no longer accept them. I think it would be really fun to play around with these kinds of scenarios, since they would create more opportunities for roleplay and allow you to shape your character’s behavior and story in a more detailed way.