A specially formulated fluid for deep cleaning of your pipe. There's no hiding from it pipes can smell and become stale after a while and the Briar can often be tainted by rich flavoured tobacco's. Simply empty your pipe, dip a pipe cleaner into the fluid and run through the stem and shank of your pipe. In particularly bad cases soak a cloth and wipe out the inside of the bowl then allow to dry. And hey presto a less wingy other half!