Holy cannoli! This stuff, when you read the directions and follow them, will clean the HELL outta your pipes, bowls, bongs, hitters, and anything else crusty with resin! Take your time, let things soak, and rinse with water. REPEAT if necessary. I can see through my glass again,save for the tiny crevices I can't reach to scrub. If you're at ALL sensitive, PLEASE WEAR A MASK and open windows or clean in a WELL-VENTILATED AREA. This is strong stuff...I almost passed out, so please take precautions. And no, I wasn't expecting bubble gum scent >:P