Slippery Stuff Liquid's unique water-based, glcerin-free formula is designed to be used when additional lubrication is desired. It has been proven safe and effective for over twenty years and is a bit lighter than Wallace-O'Farrell's gel formula. It is non-stainin, fragrance-free and dries clear and clean without leaving a sticky residue. Apply as desired for enhanced comfort and pleasure. If you have sensitivities to other lubricants try Slippery Stuff liquid lubricant, you won't be disappointed.