PI.. Why so strong?

[WorkingMann]

I've read

that PI is approx. allowed with max 1-2 drops else it would cause OD.
But how can that be?
Some of the other

products have almost as high concentrations as PI, but where you still can use 3-5 drops approx.
How can that

be?
Is PI's concentrations better quality so it works better?
I can't really figure out what makes it so

strong when other products that's almost as concentrated aren't advices these small dosages..

[CptKipling]

PI packs 0.5mg/ml of

androstenone, a pheromone that requires delicate use. Other products with similar concentrations (e.g. SOE) contain

pheromones that tend not to trigger negative reactions until you really increase the dosage.

[luxveritas]

PI stinks more than pretty

much anything else.