I'm a naturopathy by certification, I don't practice because I prefer to work in my trade. Four years studying in a formal capacity, Western Herbal Medicine, Clinical Nutrition (diet and supplements), and enough anatomy & physiology and pathophysiology to be able to converse with experts in the field and keep up, and the resulting life-long passion to seek out and critically analyse new information relating to chemistry, biochemistry, neurology, immunology, etc etc etc.

I have fond memories of one lecturer always saying "don't put anything on your skin you wouldn't put in your mouth and swallow".

Your skin is permeable, the fats and oils the skin exude are part of it's protective systems, and, as the article points out, the regular surface of the skin is a veritable smorgasbord of commensal organisms.

We should probably stop treating out bodies as fundamentally broken. They've gotten us this far, and, more generally, you don't see other animals obsessed with hygiene. Although I did recently see a video of a rat soaping itself up for a shower, so there's that I guess.