While the vagina (internal) is self-cleaning, the vulva (the external vaginal area) is not. Gentle cleansing of the vulva with a pH-balanced wash like Vagisil is important for removing common materials like vaginal discharge, urine, and feces that can accumulate daily and cause odour and irritation. These materials are not readily removed with water alone, and vulvar skin benefits from gentle cleansing with a pH-balanced wash

Isn't the vagina a self-cleaning oven?