Butylene Glycol is a clear, colorless liquid commonly used in cosmetics and skincare products. It acts as a humectant, which means it helps to retain moisture in the skin, making it feel soft and hydrated. Additionally, it can enhance the absorption of other ingredients, allowing them to penetrate the skin more effectively. This ingredient is also found in various personal care items, such as lotions, serums, and makeup. Because of its mild nature, Butylene Glycol is generally safe for most skin types and is often preferred over harsher solvents. Its versatility makes it a popular choice in the beauty industry.