Stay fresh, stay clean, say BO-free this summer with these insider tricks. Just like you detox your face, give your underarm area a deep cleanse with masks from Dot & Key or Sanfe. These are packed with ingredients like charcoal and dead sea mud to absorb dry sweat from deep inside the pores. For your body, you can make your fragrance last longer by layering a lotion in the same fragrance below it.