The male rhinoceros leads his mate and their two calves through dust, drought and relentless heat. Attacked by microscopic parasites, by sucking worms, by vicious biting insects the size of small birds, by mites, mildews, molds ripped by thorny foliage under the merciless eye of the blazing sun. Yet somehow the rhino and his family easily survive their ordeal to arrive at a safe oasis. All because of their tough rhino skin? Nature's very own living armor. Ingredients: Potassium Silicate Silicon (Si) Available in 1L and 4L sizes.