Connotation: Always negative. It is a word of criticism.
Formality: Used in a wide range of situations, from informal conversations among friends to formal academic writing.
Critiquing People: You can describe a person as `肤浅`. This usually means they are materialistic, only care about physical appearances, or lack deep thoughts and emotional maturity.
Critiquing Ideas, Work, or Opinions: An article, a movie, a comment, or an analysis can be described as `肤浅`. This means it lacks thorough research, critical thinking, or insight.
On Social Media: `肤浅` is frequently used online to criticize simplistic “hot takes,” virtue signaling, or content that focuses purely on aesthetics without any substance.