Ultra-Pure HEAVY Tuning Slide Lube is perfect for those loose slides that seem to creep out over time. Slides really stay in place with this lube! It is also great for keeping mutes from falling out — just dab a tiny amount of the Heavy Tuning Slide Lube on the mute corks and the mute will not fall out or squeak when you put it in the bell! This lube is clear, colorless, odorless, and non-toxic. It is very long-lasting. You can clean it off your fingers with a tissue or by washing with soapy water. It is sticky and amazing stuff!!