High-Tech Waterbased Lube For Smooth Rapid-Fire, Condom-Safe Action. Gunoil H2O water-based lubricant is formulated to the same high quality specifications as GunOilÂ® silicone-based lube. This condom-safe lube is highly concentrated and easy to wash off. GunOil H2O is hypoallergenic and contains no pigment, so it does not stain fabrics. Fortified with Aloe Vera and Vitamin E, GunOil H2O is gentle on your skin.