Slippery Stuff Gel is now Paraben-Free! Our Gel formula 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 womens health professionals have recommended Slippery Stuff Gel to their patients, knowing its a healthier choice of lubrication. Slippery Stuff Gel personal lubricant, enhances the pleasure of human contact. Slippery Stuff is: water based, water soluble, safe, hygienic, odorless, non-staining, and long lasting.