The word douche means to wash or soak. Douching is washing or cleaning out the inside of the vagina with water or other mixtures of fluids. Most douches are sold in stores as prepackaged mixes of water and vinegar, baking soda, or iodine.The mixtures usually come in a bottle or bag.You squirt the douche upward through a tube or nozzle into your vagina.The water mixture then comes back out through your vagina. Douching is different from washing the outside of your vagina during a bath or shower. Rinsing the outside of your vagina with warm water will not harm your vagina.ou squirt the douche upward through a tube or nozzle into your vagina. The water mixture then comes back out through your vagina. Douching is different from washing the outside of your vagina during a bath or shower. Rinsing the outside of your vagina with warm water will not harm your vagina.