Stay-hard and tighten-up creams are specially formulated to help men and women enjoy sex even more. Stay hard creams help maintain and strengthen men's erections and sexual desire for longer, hotter, and harder lovemaking. Men can also use cock rings and other erection enhancers with a similar effect as well. Tightening creams are formulated to help tighten a woman's vaginal walls. These creams can be used in conjunction with Ben Wa Balls which help strengthen the PC muscles giving women more muscle control and the ability to "hold on" or squeeze to their lover.