It is interesting to note that that the application of sindoor by married women carries a physiological significance. This is so because Sindoor is prepared by mixing turmeric-lime and the metal mercury. Due to its intrinsic properties, mercury, besides controlling blood pressure also activates sexual drive. This also explains why Sindoor is prohibited for the widows. For best results, Sindoor should be applied right upto the pituitary gland where all our feelings are centered. Mercury is also known for removing stress and strain.