I'm going to write something quite shocking so hang on to your hats!
I think a bath or shower every day is shockingly wasteful! I'm certain my family would tell me if I needed a wash. I know this because I've asked them. ? It's different if you're young and sexually active or a sweaty man (sorry guys). Then, a very quick, daily shower is, perhaps, a must. Anti-perspirant works well. You can get a natural crystal one that you wet to apply and it's very effective. One of my sons uses it and it really works. He came out in a rash using a spray.
It's also totally unnecessary to bathe children every day. Back when we were children, we had a weekly bath which we shared with our siblings! Before bed, we just washed hands, face, neck and knees (if they looked dirty) and brushed our teeth. Here we are! We survived!