Allantoin is naturally produced from the body but can also be extracted from plants (comfrey, chamomile) or made synthetically. It is a great skin-soothing, skin-conditioning, skin-protecting agent. Allantoin is a moisturizer and exfoliator that is great for those with dry, itchy skin looking for better skin texture and smoothness. It generally has no side effects. Allantoin has also historically been used to soothe irritated skin and promote wound healing.