VIBOOTHI is the sacred ash used in religious worship in Hinduism. The vibhuti ash is generally the residue of cow dung that is burned in a sacred fire (Homa). Main ingredient of Vibuthi is cow dung ash but several other substances prescribed in scriptures also used. Vibuthi is placed on the forehead as it is considered sacred and holy. Some devotees add a small amount to the tongue to pay respect to the deity.