Slippery Stuff Gel is now Paraben-Free! Our Gel formula (blue label) was developed for use in the medical community and is specifically designed to stay where you put it. For over two decades medical professionals, sex therapists and women's health professionals have recommended Slippery Stuff Gel to their patients, knowing it's a healthier choice of lubrication. Glycerin-Free. Eliminates dryness. Silky, safe, and long-lasting. Slippery Stuff is: water based, water soluble, safe, hygienic, odorless, non-staining, and long lasting. 2 ounce Tube