INSTAFLEX EXTRA STRENGTH PAIN RELIEF SPRAY DELIVERS MORE menthol power than original Instaflex Pain Relief Cream, plus 2X the pain fighting ingredients. This formula also contains a proprietary blend of the same essential oxygenated oil included in original Instaflex, but with even more menthol and an added ingredient—methyl salicylate—it provides extra strength relief for virtually all your toughest pains.