In the twelve months before her turn to go to King Xerxes, the harem regulation required each young woman to receive beauty treatments with oil of myrrh for six months, and then with perfumes and cosmetics for another six months.

Esther 2:3
and let the king appoint commissioners in each province of his kingdom to assemble all the beautiful young women into the harem at the citadel of Susa. Let them be placed under the care of Hegai, the king's eunuch in charge of the women, and let them be given beauty treatments.

Esther 2:9
And the young woman pleased him and obtained his favor, so he quickly provided her with beauty treatments and the special diet. He assigned to her seven select maidservants from the palace and transferred her with them to the best place in the harem.

Esther 2:11
And every day Mordecai would walk back and forth in front of the court of the harem to learn about Esther's welfare and what was happening to her.

Esther 2:13
When the young woman would go to the king, she was given whatever she requested to take with her from the harem to the king's palace.

Isaiah 3:24
Instead of fragrance there will be a stench; instead of a belt, a rope; instead of styled hair, baldness; instead of fine clothing, sackcloth; instead of beauty, shame.

Now when every maid's turn was come to go in to king Ahasuerus, after that she had been twelve months, according to the manner of the women, (for so were the days of their purifications accomplished, to wit, six months with oil of myrrh, and six months with sweet odors, and with other things for the purifying of the women;)