The cold face emoji means freezing, chilly, shocked, scared, or emotionally frozen. It is often used for cold weather, cold rooms, or moments that make someone freeze up.
🥶
Literal use
People use it during winter, air conditioning, icy drinks, cold water, or any situation where they feel physically cold.
Figurative use
It can also mean fear, shock, or a cold reaction. For example, someone may use it after a harsh reply or scary moment.
For the opposite temperature, use the hot face emoji.