Dipropylene Glycol is a byproduct of propylene glycol production. It is an alcohol used  as a viscosity modifier,  texture  enhancers and satbilizer,  allowing for even distribution of ingredients and imparting consistency. As a solvent, it solubilizes ingredients without altering their chemical properties. Dipropylene Glycol also serves as a masking agent, helping to disguise unpleasant odors of ingredients, and as a fragrance carrier. It is considered safe and is widely used in a variety of skincare and cosmetic products.