K-Y Jelly is a water-based, water- soluble personal lubricant , most commonly used as a lubricant for sexual intercourse and masturbation . A variety of different products and formulas are produced under the K-Y banner. [ citation needed ]

The origins [and meaning] of the brand name 'K-Y®' are unknown. Two popular myths are that (1) it was created in Kentucky and (2) the letters represent the key ingredients used to make the lubricant. . . . [W]e can confirm that neither of these myths are [] true . . . .

Unlike petroleum-based lubricants, K-Y jelly is biologically inert, reacting with neither latex condoms or silicone-based sex toys, and contains no added colors or perfumes.[citation needed] It is nonstaining and easy to clean up. Despite having a thick consistency and a tendency to dry out during use, it can be "reactivated" by the addition of saliva or water.[citation needed]

The product contains no spermicide and thus cannot be used to prevent pregnancy. A formulation containing nonoxynol-9 was removed from the market after the spermicide was found to facilitate the spread of HIV.[5]

K-Y Jelly has been available over the counter in the United States since 1980.[6]