For the super elite, regular tissues will not do for coke nose. After all, how are you going to spot the white chunks of blow on a white tissue, save the mucus and blood. Thankfully, Japan has turned up a set of black tissues that not only look brilliant, they cost a small fortune as well.
For $150, you get 20 boxes of tissues with 160 per box. No longer will rocks in your nose bother you. Keep blowing and look for the evidence.