A clear, odorless byproduct of soapmaking that has humectant properties which means it can draw and retain moisture. Glycerin can be purchased as a standalone ingredient from animal or vegetable sources. Vegetable glycerin is generally from soybean, palm, or coconut sources.
Glycerin is believed to be affective in alleviating dryness in skin, possess some anti-inflammatory properties, and help maintain skin's barrier functions.