She was born in 1946 in Istanbul. She studied painting at Marmara University, Faculty of Fine Arts. In 1985, she received bachelor’s degree from the Painting Department of the same institution. In 1984 and in 1986, she made etching works at Çamlıca Art House. Büyükünal, who works as an art consultant for Garanti Bank, Vakko and the Istanbul Chamber of Commerce, exhibited her works in various solo and group exhibitions. Her articles and interviews were published in newspapers such as ‘Cumhuriyet’, ‘Yeni Yüzyıl’ and in magazines such as ‘Sanat Çevresi’, ‘Art in Turkey’, ‘Itovizyon’. In 1997, her book ‘İstanbul’da Bir Aşktır Sanat’ was published. Büyükünal passed away on 26th of November, 2019.