Why married women wear sindoor
Sindooor or vermilion holds lot of importance in Indian society. The tradition of application of sindoor in the parting of hair by married Hindu women is considered extremely auspicious and is being carried on since centuries.
In traditional Hindu society, wearing sindoor is considered must for married Hindu women. It is a visible expression of their desire for their husbands' longevity. Traditionally therefore, widows did not wear vermilion.
According to Hindu astrology, Mesha Rashi or the House of Aries is on the forehead. The Lord of Mesha is Mars and his color is red. It is believed to be auspicious. This is why red sindoor is applied at the forehead and at the parting of the hair. Both are signs of saubhagya (good fortune). Sindoor is also considered to be the symbol of the female energy of Parvati and Sati.