I have very sensitive skin and these dryer sheets have never given me hives! They are unscented which I prefer not only for the sensitive skin factor but also because I can't stand most 'laundry' scents. They can be so strong! These keep or clothes soft and eliminate some of the harmful chemicals, emphasis on some. If you want something chemical free or all natural this is not the product for you. If you're looking for a great dryer sheet that doesn't have a scent, these will work well for you!