It is narrated from Sayyidah Umm Atiyyah (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) forbade a woman to mourn for a deceased person for more than three days, except for her husband, for whom she mourns four months and ten days; and she should not wear dyed clothes except a garment of 'asb, nor apply kohl, nor apply perfume except near (the end of) her purification, when she becomes pure, (using) a little qust or azfar (types of fragrant incense).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب العدد / 15526