Numbing lube isn't inherently harmful; however, numbing lube temporarily deadens the sensors in the body that can tell you when something isn't right, which may cause problems. I just want to know if I should plan to reapply while I'm Is numbing anal lube safe to use? Form-Fitted Condoms These condoms provide a better fit and more comfort. The width measurement is taken at the middle of the condom shaft. Rub it in good and let it sit for minutes before you get down and dirty. Support Contact Account Cart 0.