Why does Instant Gentleman only come in 1x? Is androsterone the limit?

Many products in the consumer line come in 1x, 2x and 4x concentration, but IG only comes in 1x. Is the reason it only comes in 1x because there is something about androsterone that prevents it from coming in higher concentrations? If not, who do we petition to start producing a 2x concentration of IG? When I use it I tend to use 2 sprays to the neck, so a 2x concentration would be cheaper for me and not produce as much scent.