What makes chhinkni powder so effective?

[Photic]

I have never tried the stuff myself but I think it's crazy how potent that stuff seems to be. I bought a regular U.S. made sneezing powder about 15 years ago but it only made me sneeze 3 or 4 times and then I was done. So what is it about the chhinkni powder that's so different from regular sneezing powder? Also for those that have tried it what does it feel like when it's in your nose? Is it a burning feeling or something else? 

[murphy dee]

It's got eucalyptus and menthol in it, so it feels like an intense cooling sensation to the point that it starts feeling sharp/prickly (but doesn't hurt, just irritates). The scent + the cooling effect + the fine powder combines together to make you sneeze. I've taken it many times myself and it's been very effective, though sometimes I do have to sniff a little bit extra two or three times to really get it going. I've probably sneezed up to 20 times during one session. It's definitely worth a purchase.