Most condoms that come already lubricated use a silicone-based lubricant. This type, like the water-based, is safe to use with all types of condoms, yet won't evaporate like water does. It is extremely long lasting and an excellent lube for sex in water. Many popular manufactures say that silicone lube is easily removed with soap and water. However, many people feel a residue after washing. This can be greatly reduced by wiping excess lube from the skin before showering. Any residue will be absorbed into your skin after a brief time. Silicone Based Lubricants can be used as a skin moisturizer to soften the skin. One drawback of some silicone lubricants is large spills have been know to stain sheets.