use a specialty cleaner like Formula 420

Crafted from premium quality glass with a thickness of 5mm

and keeps the vibrant colors looking fresh session after session

and essential oils

10 inch Classic Barrel Perc Bong Color:Blue use a specialty cleaner likeSometimes, you just want a classic like this one! At almost 10 inches, this classic piece is sure to deliver smooth hits every time~ We love the colored accents on the mouth, base and handle on the bowl. It's clean lines only accentuate the barrel perc that will filter the smoke and allow smooth hits every time you let it rip! Features: Height: 10 inches Thickness: 5 mm Perc : Barrel perc 14MM female joint With gorgeous color accents on mouth, base