‘脸皮’ literally means 'face skin', but it is used figuratively to refer to a person’s sense of shame, embarrassment, or social propriety. The character 脸 (liǎn) means 'face', symbolizing one’s public image or dignity, while 皮 (pí) means 'skin' — together, they evoke the idea of a thin, protective layer over one’s dignity. In everyday speech, 脸皮 is rarely used in its literal anatomical sense; instead, it appears almost exclusively in idiomatic expressions related to emotional resilience or lack thereof.

You’ll often hear phrases like 脸皮厚 (thick face skin = shameless, bold, or unembarrassable) or 脸皮薄 (thin face skin = easily embarrassed, shy, or overly sensitive to criticism). These describe personality traits tied to how much social discomfort someone can tolerate before feeling humiliated. The term carries mild judgment and is common in informal, conversational Chinese — especially when commenting on someone’s confidence, audacity, or vulnerability in social situations.