Vibhuti is a special powder that people in India put on their forehead, also known as tilak. It is made from sacred substances like ash or sandalwood paste that are blessed by priests. In Hindu traditions, it is believed that vibhuti represents the utmost purity and holiness of Lord Shiva.
When people put vibhuti on their forehead, it represents their devotion to Lord Shiva and serves as a reminder to keep their thoughts and actions pure. Some people also believe that vibhuti has healing properties and can protect them from negative energy.
Basically, vibhuti is like a special sign or symbol that helps people show their love and respect for God and reminds them to be good and pure in their thoughts and actions.