This is a small sealed container of kumkum powder. Kumkum powder is made from grinding dried tumeric into a powder after which a few drops of lime are added. This gives it the bright red color.
Kumkum is considered to be very auspicious by Indians and thus, used for various purposes on special occasions like wedding and festivals. Typically applied along the parted hair, it usually signifies a woman's marital status.
Easily applied by adding a few drops of water which turns the powder into paste.