JO Prolonger Desensitizing Spray 4oz. JO Prolonger Desensitizing Spray provides lasting pleasure and satisfaction for your partner plus intense and continued ecstasy for him. Sexual excitement and heightened pleasure; formulated for a man's specific needs. Men will now benefit from increased energy, amplified sex-drive, intense stamina, and an orgasmic encounter that rocks his and her world! 4 fluid ounces.