People with extremely dry skin or eczema actually should NOT bathe daily, particularly in winter.
Oh, sure, clean off the surface dirt, and sweat from manual labor or hard exercise, but folks in those categories can actually be harmed by too frequent bathing.
This is particularly troublesome in children with eczema. It usually happens this way:
Kid gets a rash.
Mother (or father), concerned child has or will get an infection, bathes child more frequently than usual
Rash gets worse.
Parent bathes child even more to eliminate the blight.
Rash gets worse
Parent drags child - now very rashy, with raw, bleeding, oozing skin - to doctor. Kid might even have a genuine skin infection at this point. Parent wrings hands, explains dedication to cleanlines, weeps at spread of this hideous, disfiguring plague on offspring.
Doctor says: kid has eczema. Stop using soap, use this very very mild cleanser. Use this cream to sooth. Put kid in long sleeves, pants, bandages, and trim nails very very short to cut down on scratching. Don’t bathe the kid so much
I speak from experience on this. I’ve had to cut back to once-a-week during a couple of very serious outbreaks. So, not only do you have this hideous skin problem - peeling, cracking, bleeding, oozing, itching that drives you mad and keeps you up at night, not to mention the joys of hopping into the bathroom in the morning to pry the stuck-to-you bedsheet off your scabby hide - people treat you like your a leper, they won’t sit next to you on the bus or train, when you deal with service folks they sometimes look at you and gasp at your raw face and hands, look at you funny if you’re wearing long sleeves all summer, AND, if they find out you’re NOT bathing at least 14 times a day they start lecturing you on how you’re filthy and it’s all your fault you have this disease (it’s not a disease, and it’s not contagious) because you aren’t clean enough. Well, NO, in part it can get really bad because you are too clean.
Fortunately, there’s much better treatment for eczema than there used to be. And, you know, I really, really like a luxurious hot, steaming bath but my skin won’t let me do a good soak very often. >sigh<
While non-bathing people can get eczema and other nasty skin conditions, where the rate of bathing goes up past a certain point some skin problems like eczema actually incease. Really, what is necessary is a happy medium based upon the needs of the person in question.