If you're looking for natural chemical-free throw-away baby wipes, you should look into the brands Seventh Generation, Natracare and WotNot. They all use organic ingredients so are kind to babies bottoms, as well as being 100% Biodegradeable- so are kind to the environment too.
Some of the ingredients in J&J's and Huggies wipes are listed carcinogens and known skin irritants. No offence to anyone who uses them, but I wouldn't recommend them for this reason, and for their negative environmental impact (they don't biodegrade and the chemicals in them leach into the environment).
They may be more expensive, but in my opinion its definitely worth it.
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