Natural or not?

THIS article is a good reminder for some fairly obvious info, but applied in some new areas (for me). i.e., I semi-trusted the baby shampoo's claim as "natural" & great for no tears (probably just because I don't know what all those ingredients are on the back so I figured they must be relatively natural or the claim wouldn't be made. Hah! Say goodbye to naivete, I will now question everything! :). It's really amazing how many different chemicals there are out there (not saying they're all bad, just saying...). I do love the idea of putting natural products on skin, but now I'm wondering, what is natural after all? More research I suppose--please do impart any knowledge you may have on the subject :)