o.b. organic tampons offer effective and innovative period protection for up to 8 hours* (*Overnight use. We recommend changing your tampon every 4 to 8 hours). o.b. tampons now feature a Tru-Comfort applicator which is up to 92% plant-based and made from renewable resources. Our tampons for women are made from 100% organic cotton and are free from chlorine, fragrances and dyes. o.b. tampons – only what you need, nothing you don't. At o.b., we've always believed that the best applicator is no applicator at all. But we also know a lot of women prefer using a tampon with an applicator. So, we've created our “second best” applicator.