STUD 100 is a male genital aid intended to help delay orgasm by preventing over stimulation to the penis. It is made up of one active ingredient which is intended to be sprayed on before engaging in sex.
They advise to wash it off after use, and to limit the amount of sprays to prevent side effects. This also must only be added to healthy skin tissue, as broken or sensitive skin can lead to further irritation. While not a traditional male enhancement aid, it is meant to help one last longer in the bedroom.