Those women who are interested in the longevity of their husbands should not to ignore the high significance of turmeric powder, kumkuma, eyetex, vastra,+
jewellery like ear studs, bangles, necklaces etc. As at the early mornings, women offering Arghya or water for worshipping Surya Deva would avoid widowhood for seven births ahead!
So, scriptures definitely talk about the importance that Sindhoor or Kumkuma in hindu women lives.
Now where to wear it !
The practice is to wear it on the Seemanta or the parting of the hair.
The Lalita Sahsranama from Brahmanda Purana uses the words "Seemanta Sindhuri" which clearly indicates the exact place where one should wear the Sindoor.
The particles of your Lotus feet tuns red as Sinduri which adorns the foreheads of virtuous women.
Seemanta is nothing but the parting-line of a woman’s hair or maang in hindi.