PP powder, also known as potassium permanganate, is clinically more effective when diluted with warm boiling water and used to disinfect the female vulva and vagina. Because it is a more acidic substance, women can soak it every night to increase the acidity of the vagina so that other bacteria cannot grow and multiply inside the vagina. Mostly, it is because women have inflammation of the vagina that causes the pH level of the vagina to rise and other bacteria to grow and multiply inside. The increased acidity of the vagina can inhibit the growth and reproduction of bacteria in the vagina. Be sure to use it after the water is fully hydrated and the water turns light pink.