Cats don't strip their self-regulating biome from their skin. Humans shouldn't either.

When domestic cats clean themselves, they use their tongue and saliva. That's about it except that they do it fastidiously and often. Humans, normally shower once a day. That means using lots of water and soap which removes the self-regulating biome on the skin. The nature.com website says this about the human skin biome:

"Our skin is home to millions of bacteria, fungi and viruses that compose the skin microbiota. Similar to those in our gut, skin microorganisms have essential roles in the protection against invading pathogens, the education of our immune system and the breakdown of natural products."

It is a useful part of human anatomy, and it serves a purpose. For a high percentage of people there is no need to wash the entire body with soap and water daily. 

We might learn from domestic cats. Image: MikeB

Humans do it to feel better and to prevent body odour which is social unacceptable but there is no health benefit and a possible health problem.

Professor Sally Bloomfield, from the London School of Hygiene and Tropical Medicine said:

“And the reason we bath, and shower is that we want to get rid of those odours and we want to feel comfortable. That's fine — but as far as preventing disease, it's really not important.”

But she also said that the microorganism on our skin helps to control oil levels on the skin.

Interestingly cats don't develop body odour even though they don't wash with soap and water. Cats smell great as all those who have kissed and cuddled their cats can attest.

If human society got rid of the currently socially unacceptable body odour from people who don't wash for ages, we wouldn't do it I'd suggest.

It is a social norm. If a person doesn't do hard physical work and dirty work, there is no need to shower daily. There will probably be health benefits.

When domestic cats are bathed in water it strips away their identity as other cats identify cats by their body scent. It causes a temporary problem until body scent is restored.

Humans might learn from their cat not to over wash. The feeling of being showered can be recreated artificially by simply washing your hair. 

That programs the brain to believe that you are washed all over.