Unlike the vagina, the anus doesn't produce natural lubricants during sex. That means you're going to have to lube up if you plan on sticking anything inside your or your partner's behind. Typically for anal sex involving a penis as opposed to, say, pegging , you want to use thicker lube that doesn't require constant reapplication, explains Alicia Sinclair, founder of sex toy brand b-Vibe. Most people find that they prefer a thicker lubricant for anal play because it gives some extra cushion to protect delicate body parts.

The results of two research studies were released in at the International Microbicides Conference which, some may think, call into question the safety of using lubricants for anal sex. But what do these results show? Is the evidence enough to change our safer sex messaging? We don't think so -- have a look at the rationale for why we don't think our messaging about lube use for anal sex should change.

Clue is on a mission to help you understand your body, periods, ovulation, and so much more. Start tracking today. Personal lubricant lube can be used to help make sexual acts—like sex, masturbation, or sex toy play—more pleasurable. Why not use lube?