Moisture

The dead skin layer becomes thicker if the amount of moisture on the skin surface is low, and its elasticity and vitality decreased, if not cared for properly. Skin also becomes roughen and dark, which are the signs of skin aging.

It is to measure the amount of moisture on the skin surface, contact the moisture sensor to the skin surface and measure the changes of the capacitance of the precision capacitor, which differs depending on the moisture distribution.