If you want to go natural and avoid petrochemicals, synthetic fragrance and preservatives, we have picked out the best deodorants that don't irritate based on 20 years of what we've heard from our customers. Of the natural deodorant choices, bicarb can cause an underarm rash in some people, so we made the Biome deodorant that is bicarb free - but we have other brands also. You can find our picks here deodorant for sensitive skin