hygroscopic agent造句

Instead of using silver iodide _ an agent whose structure resembles that of ice and helps water vapor become droplets _ hygroscopic agents are salts that allow vapor to condense at lower relative humidities.
Pre-shave products and some shave creams contain potassium hydroxide to force open the hair cuticle and to act as a hygroscopic agent to attract and force water into the hair shaft, causing further damage to the hair.
It's difficult to find hygroscopic agent in a sentence. 用hygroscopic agent造句挺难的