Formula 710 Instant Cleaner works quickly and efficiently on your Pyrex, glass, metal, and ceramic pipes and smoking tools. Made from earth friendly and biodegradable materials, this instant cleaner is available in a 12 ounce bottle. Highlights -Concentrate cleaning formula -Cleans in seconds -Non-toxic -Works with Pyrex, glass, metal, & ceramic -Great for bongs, nectar collectars, hand pipes. and wake n' bake mugs! In some instances, a small amount of excess product appears on the exterior of the Formula 710 bottles. This is due to their manufacturing and filling process. This does not affect the integrity or functionality of the product.