Vagina is a microenvironment, and its health is largely influenced and controlled by its residents – microbes. Good residents such as Lactobacillus acidophilus, Lactobacillus plantarum, Bifidobacterium bifidum, Lactobacillus fermentum, Bifidobacterium longum provide optimal growth and living environment for the cells and tissues to cultivate and enrich a healthy vagina.