JO Prolonger Gel helps you maximize stamina for extended pleasure and playful intimacy. Specially formulated with natural desensitizers like allspice, patchouli oil, and peppermint, it's the perfect way to last longer and climax together. Compatible with toys and all most condoms. Not compatible with polyurethane condoms. Key Ingredients. Allspice Oil is well known for its anesthetic property. Provides a natural numbing effect. Patchouli Oil, is an oil that promotes healthy skin and can provide a natural numbing sensation. Mentha Piperita not only provides a cooling sensation on contact, it also provides a subtle plumping effect to skin.