Umm Atiyyah al-Ansariyyah (may Allah be pleased with her) said that the Messenger of Allah (peace and blessings be upon him) said to me: "No woman should mourn for a deceased person for more than three days, except for her husband, for whom she mourns for four months and ten days. She should not wear dyed clothing, except garments of 'asb (a Yemeni cloth), nor apply kohl, nor apply henna, nor touch perfume, except at the time of her purification: when she becomes pure from her menstruation, she may use a little qust and azfar (kinds of incense)."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الطهارة / 868