Glycerine (glycerol) ek humectant ingredient hai jo skin ke outer layer mein paani ko pull karta hai aur skin ko hydrated rakne mein madad karta hai. Yeh skin barrier ko bhi strong banata hai. Glycerine ko moisturizers, cleansers aur serums mein bahut commonly use kiya jata hai kyunki yeh skin ke moisture ko lock karta hai.