How useful is vaginal shower? If the gynecologist does not recommended it, there is no reason you need to do this. Be it only water, it is not necessary to clean the inside of the vagina (especially with the pressure of the shower). You can destroy the vaginal flora, it contains useful bacteria for the organism, which form a kind of internal protective film, designed to protect you from genital infections. If you did not know it, it's good to know it now... the vagina cleans itself by its own natural system.