Squirt the Carbon Cake Softener liberally around the inside of the bowl. Then use a Q-Tip or pipe cleaner to spread it even over the carbon cake. The pipe should then be set aside for from an hour to over night depending on the hardness and amount of carbon. Start with one hour.
Once the carbon cake has softened, simply ream the bowl as usual with a standard pipe reamer. Wipe any remaining residue from the bowl using a paper towel. Let the bowl dry completely and you’re finished.
To give you an idea of the amount to use, the 2 ounce bottle should treat up to 20 pipes depending on the thickness and hardness of carbon and therefore the amount needed to soften it. Our testers have consistently been able to treat 18 to 20 pipes per bottle.