Editing the Bathing Body Permanently

Not sure if this is the right place to post my question, since it overlaps topics somewhat, but Admins, if it's not, please move to a correct forum.

I would like to find a way to edit the Bathing Body so that an oiled/wet look CC remains on the skin when Bathing, Sunbathing, Showering and *ahem* 'other' situations. I can use a mod called "Outfit Tools" by Scumbumbo to copy a CAS Outfit (with the oil/wet look CC) that I would like to use, onto the Bathing body. This works, but does not remain the next time my Sim showers, Sunbathes (and etc) So, each time, I have to use the command to copy the body with the wet/oil look again. Also, I noticed that some accessories such as nail colour doesn't transfer, and the game creates a color that I have not even chosen, in CAS. Very odd. If only there was a way to have the Bathing Body as one of the Outfit Categories in CAS. That would certainly solve the problem. Thanks for any help or suggestions.