Make sure it's specifically meant to be used in a Brazilian wax. You can either wax or shave it, but be very careful regardless of the method you choose. Stir it up with one of the waxing sticks.
For the next few days, wear boxers instead of briefs, and stay of skinny jeans until the waxed area is no longer red. The hair will not come out cleanly unless you pull against the growth.
Tips Make sure the room you're using is well-ventilated. First of all, waxing as well as all other types of hair removal puts you at risk for getting ingrown hairs, which are hairs that grow back into the skin.