Regular deodorant contains toxins such as aluminium, parabens, triclosan, propylene glycol, chemical fragrances (phthalates), DEA and more. Some of these toxins are known carcinogens which means they've been proven to cause cancer. Others affect the kidneys, lungs, heart, reproductive and nervous systems. Natural deodorant contains none of these. Fragrances come from essential oils and fruit extracts and there are no ingredients that can harm the human body in any way.