How to choose the best arousal gelSo, how do sex gels work, you ask? According to Organic Loven founder Taylor Sparks, arousal gels help to open your blood vessels, which then increase oxygen delivery and blood flow to the genitals. Another good reason you'll wanna check that ingredient list: Formulas with oil (which is, unfortunately, a lotta sex gels) aren't compatible with most condoms since the oil can break down latex, as double board-certified gynecologist Dr. Monica Grover explains. Naturally, it all comes down to the type of sex you're having and what sensation you're looking for. Also, keep in mind that—while some arousal gels can be used as a lubricant—some are only intended for getting the party started and may require additional lube.