Wet Stuff Gold is a very long lasting water based lubricant. It's designed to be mild for all internal uses. Gold is the longest lasting of the Wet Stuff water based range and suits most peoples favourite oral, vaginal and anal uses. Gel Works invented warming lubricants in 1993 with Wet Stuff Gold. Water retaining compounds give off heat when mixed with water. The product heats to body temperature with body fluids. Gold has a mild initial warming effect.