Final answer:
Frida Kahlo used the style of Surrealism in her self-portraits, which depicted her reality and explored complex themes related to her heritage, medical conditions, and the repression of women.
Step-by-step explanation:
The style of painting used by Frida Kahlo in her self-portraits is Surrealism. Kahlo's work incorporated her physical and psychological pain, along with imagery from Mexican culture and nature. While some elements of Surrealism can be seen in her work, Kahlo emphasized that she painted her reality rather than dreams. Her self-portraits often depicted symbolic and experimental themes, exploring complex topics related to her heritage, medical conditions, and the repression of women.