The face with raised eyebrow emoji is a yellow, neutral face with a furrowed brow, a small frown, and a single, vertical line in place of a mouth, shown with one eyebrow raised as if in surprise or skepticism.
It is often used to convey a sense of skepticism, disbelief, or questioning, and it can be used to show that you are doubting or questioning something. It can also be used to express a sense of surprise or disbelief, or to show that you are feeling suspicious or wary.
Face with Raised Eyebrow was approved as part of Unicode 10.0 in 2017 under the name “Face with One Eyebrow Raised” and added to Emoji 5.0 in 2017.
U+1F928
? Face with one eyebrow raised