.In 2023, Shahar portrayed the lead role of AMALIA TISHBY in the series Full Speed. That same year, she portrayed MORIA SABAN in the series Bnei Mitzvah.
In 2022, she participated in the music video for Kapiot, the single from singer Eden Hasson.
In 2021, she participated in the television comedy series Magen David Darom.
In 2018, she participated in the television drama series State Rules.

At age 18, Hayoun moved to London and booked major modeling campaigns with brands ASOS, Missguided, and others.
In 2019, Shahar signed with Israeli modeling agency Elite Models. Prior to that, she was signed with ITM modeling agency. In 2021, Shahar modeled for Opticana’s campaign alongside singer Omer Adam.
Since 2022, Shahar has served as the official spokesmodel for lingerie chain FIX and as one of the Israel ambassadors for Samsung in Israel. Also in 2022, Shahar was chosen to serve as spokesmodel for the Urbanica fashion brand.
In July 2023, Hayoun joined the modeling team of the fashion brand Twenty Four Seven, alongside Yehonatan Mergui, Maya Kay, and Tomer Hacohen. IN recent years, she has also starred in campaigns and modeled for numerous brands, among them Alo Yoga, dermo-cosmetics brand CeraVe, Il Makiage, YSL, Strongful, American Laser, Adidas, Missguided, Miki Bouganim, NB, and others.