With these vaginal douches you can clean your vagina or anus. Ideal after having sex. Vaginal douching is the ancient practice of rinsing the vagina for hygienic purposes. Millions of women around the world do it, and a recent survey found that in the United States nearly 30 percent of women between the ages of 20 and 40 douche regularly. Both store-bought preparations and homemade ones often consist of vinegar and water, although some women douche with water alone. Others may use a mixture of water and medicinal herbs.