Hi Shenandoah, In the IMPI Beta test, the description says:



These bottles of IMPI all contain the same pheromones as the regular IMPI, but in addition are

scented with one of (three)...

My take on it:
IMPI 1 - Pheromone +

secret african herbal aphrodesiac (not around anymore)

IMPI 2 - (Currently up), same pheromones, more of the

secret ingredient (or tweaked secret...

I don't remember seeing an unscented IMPI. I believe you got the regular version vs the beta

versions (you had to order those differently, they were under Impi Beta Testers.