I think that you can say that one there wear wigs is natural. Because it's natural underneath it, and some wear it as a protective styles for some time and switch between that and wearing the natural hair out.
So as long as there isn't used relaxer, texturizers or a flat iron so much and that the natural texture almost isn't there i think you can call it natural.
My definition is pretty straight forward. No chemicals with the intent to loosen/straighten texture i.e. relaxers/texturizers. Color can loosen curls unintentionally, but those who color are still natural to me, as well as those who henna, and straighten frequently.
Super Thick corkscrews and waves. LOVE Elucence MBC, Giovanni 50/50 condish, Qhemet Products, V05 Calming Chamomile Tea Therapy condish, Jessicurl WDT. These are my official HG's that I love oh so much http://www.youtube.com/user/Curlypad?feature=mhum
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