Why is a red dot worn on the forehead?

Pottu is a Tamil term commonly used for a forehead dot; academic work on Tamil practice also links the terms pottu and bindi. Bindi often describes a dot or decorative mark, while tilaka is a broader term for religious forehead marks that may use different shapes and materials.

Depending on the tradition, a mark may be made with kumkum, sacred ash, sandalwood paste, or another material. A reusable or adhesive decorative bindi can also be chosen to match clothing. The word a person uses can itself reflect language, community, or the purpose of the mark.

Research on Tamil Hindu women's practices connects the red pottu with mangalam, meaning auspiciousness, and with the ritual life of the household. Red kumkum is also offered or applied in devotional settings. These associations explain why red is especially visible at celebrations and ceremonies.

That does not make red a universal code. In some settings it may be associated with marriage; in others it expresses devotion, blessing, cultural identity, adornment, or several meanings at once. Black dots, sacred ash, sandalwood marks, and decorative styles have their own contexts.

Women, men, and children may wear forehead marks, although the material, form, and reason can differ. Some marks are received after worship, some are applied for a function, and others are worn routinely or aesthetically.

Tamil identity also crosses religious and national boundaries. For some people in the diaspora, a pottu can communicate cultural belonging as well as, or instead of, a specifically religious meaning. That is why appearance alone is not enough to label the wearer.

• Ask which word the wearer uses and what it means to them, if the context makes the question welcome.
• Do not infer marital status or religious belief from colour alone.
• For a wedding programme, describe the specific family's practice instead of making a claim about all Tamil people.
• Treat sacred materials and marks received during worship with the same respect as other religious symbols.

Cultural guides can explain recurring themes, but they cannot replace a person's own explanation. A good description leaves room for devotion, auspiciousness, family memory, identity, beauty, and individual choice to overlap.