“5 things to know about tilak”, Hindu American, January 28, 2021:
“Tilak (“mark” in Sanskrit) is a paste made of ash, sandalwood, vermillion, clay, or turmeric, typically worn on the forehead, and sometimes other parts of the body — like the torso, arms, or neck — signifying which spiritual lineage a devotee adheres to within Hinduism. The shape of the tilak and the substance it’s made from generally corresponds to the God or Goddess that lineage worships.
Shaivites (worshippers of Shiva), for example, smear their foreheads with three horizontal lines of vibhuti, a sacred white ash that acts as a reminder of the temporary nature of the material world. Made of the burnt dried wood from Hindu fire rituals, the three lines of vibhuti are called tripundra, and represent Shiva’s threefold powers of will, knowledge, and action. Tripudra is also frequently worn with a dot made of kumkum (a powdered red turmeric) in the center, symbolizing the creative and energetic force of the Divine known as the Goddess Shakti.
Vaishnavas (worshippers of Vishnu) usually apply tilak using sandalwood, clay, or a mixture of both, in two vertical lines, which connect near the bridge of the nose to form a “U” shape called urdhva pundra. Though the depictions and layers of symbolism of urdhva pundra vary depending on the sect of Vaishnavism a person belongs to, the “U” is commonly seen as the footprint of Vishnu, indicating the wearer’s desire to become his humble and devoted servant…..”
Read the full article at Hinduamerican.org