The neutral face emoji is a yellow, neutral face with a furrowed brow, a small frown, and a single, vertical line in place of a mouth.
It is often used to convey a neutral or indifferent emotion, and it can be used to show that you are feeling neither positive nor negative about something. It can also be used to express a sense of balance or neutrality, or to show that you are feeling neutral or impartial.
Neutral Face was approved as part of Unicode 6.0 in 2010 and added to Emoji 1.0 in 2015.
U+1F610
? Neutral face