Crystal DNP contains less actual DNP than powder DNP for a given dose. When you take crystal DNP, peak levels will be lower (though they may be high enough to produce a strong sense of heat and sweating). More importantly, levels drop as the drug is metabolized. Since crystal DNP produces a lower peak, at any given time point thereafter, there would also be lower levels in the body (assuming the two have the same pharmacokinetics). This means that a given dose of crystal DNP will more quickly be reduced to a level low enough that the heat seems to have subsided. You might compare it to taking 500mg of powder DNP versus 400mg of powder DNP. Both produce moderate-high blood levels that make you hot and sweaty, with the 500mg dose producing even a greater effect, though you might not be able to tell the difference too well. However, at the lower dose, you'll reach a point where you feel cool more quickly. IMO, the faster effect of crystal DNP is merely a matter of ingesting less DNP. I think the notion that crystal DNP comes on faster, with a higher peak level, is in people's heads (put there by one of the bro guides on DNP). However, I think the notion that the side effects subside more quickly is correct, owing to fact that less DNP is being ingested. As far as I know, the pharmacokinetics (i.e. absorption, distribution, and metabolism) of the two forms has never been tested or compared, so take my hypothesis for what it's worth. I could very well be wrong.