Clear September 17 2014
To remove heat. To 'clear' in Chinese therapeutics technically implies to clear heat.
Clearing is differentiated from 'cooling' in that it actually means to take the heat away altogether, not just to balance out the effect of it with its opposite. It is used in cases of excess heat, rather than deficient Yin. Many Chinese medicinals with heat-clearing properties have antibiotic effects.
This is the equivalent of drinking cold water to rebalance the temperature of the system and thus the face (clearing), vs. splashing cold water directly on the skin for a more temporary fix. It removes excess heat at its source. Clearing is a deeper action, and takes longer to accomplish.