Here are two different kinds of intimate lubricant from the same company. The Original Formula is water-based, the Enhanced Formula contains ultra-concentrated silicone. Both are hypoallergenic, scent-free, waterproof and non-toxic. And both are latex and rubber friendly. If you opt for Sliquid Silver - the silicone-based variety - remember that it should not be used with other silicone products. Both work well for sensual massage, the Sliquid Silver somewhat better. The water-based lube, says the manufacturer, is blended to emulate your body's own natural lubricants. Either one is a good bet, depending on individual taste.