Butylene glycol is a versatile liquid that is commonly referred to as BG. It is often used to create products that feel great on the skin. BG serves as a solvent for other ingredients and helps products absorb faster and deeper into the skin. Additionally, it acts as a slip agent to ensure smooth application and attracts water into the skin as a humectant. So far, there have been no concerns regarding the safety of using BG in products. It is approved by Ecocert and is even used in natural products. Furthermore, it is also a food additive.