Residue In oil pipe dmt

[DK_one]

Ok, I smoked like 3x mini doses 15mg of mhrb stb extract

I got a no residue should be left in the pipe info in mind....

Does this picture of my pipe is any reason to worry of unclean product?

 

[TransistorBass]

I think the dregs are just a little burned, other than the bottom of my pipe which can get a bit dark the rest of my pipe is a hazy white from the vapour.
I soak mine in vinegar to clean them, the bit of dark stuff may need a gentle scrape with something.
I did get the impression that a clean pipe made for a cleaner trip, when i was using a dirty pipe I was getting darker feeling trips.