I remember seeing that claim on the Huggies Pure pack, about how it's closest to cotton wool and water (I got a free wipes pack in a Bounty pack or something). Then I looked at the ingredients list, which is the following:
Aqua, potassium laureth phosphate, glycerin, polysorbate 20, tetrasodium EDTA, methylisothiazolinone, methylparaben, malic acid.
Last time I checked, water was H2O and nothing else...
I'm not slating anyone for using these wipes, if they work for you, then fab. But I just couldn't believe they were allowed to say that their wipes were anything even resembling cotton wool and water.