Problem with hairs (make up chair and CAS)

My sim had her hair changed by requesting a new hair style from the make up chair. Afterwards I found no way to change back to the original hairstyle, so I went to CAS, and noticed he new style was not un use.

So - in game this sim uses a hairstyle different from what is shown in CAS, and I want the CAS version to be used in game...

Is there a cool down period after using the makeup chair? Is CAS overruled by that chair for so and so long? Anyone knowing how long?

Or is there another way to fix this? I'm kinda desperate because I am nearly done with a video production, but can't do anything as long as the appearance is wrong...