It is narrated from Sayyidah Umm Atiyyah (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said: "It is not lawful for a woman who believes in Allah and the Last Day to mourn for a deceased person for more than three days, except for her husband, for whom she mourns four months and ten days. 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 takes the bath after her menstruation, (using) a little qust or azfar (types of fragrant incense)." Muslim narrated it.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب العدد / 15527