Medically reviewed by Kristie Reed, PharmD You can use glycerin to moisturize your skin; it is often added to lotions and creams. Glycerin may also relieve constipation when you use it as a rectal ...

Zein, a protein from corn, could serve as more label-friendly alternative to glycerin, says the director of business development for the only US-based zein supplier. “Zein will add shelf-life, it will ...