Eyebrow tics are very common, often involving raising one eyebrow or both. Some very well-known people have this motor tic, helping raise awareness for Tourette syndrome and other tic-disorders.
These tics may occur alongside eye tics. They can vary in intensity and frequency, and can worsen due to factors such as stress and anxiety.
H3H3 is a YouTuber with eyebrow tics. Whatever people think of him, Ethan has certainly contributed to increased awareness of Tourette syndrome, and in particular his eyebrow tics that are present in all his videos.