This TUNE-IT will stabilize your guitar tuning and extend the life of the string.
Unprecedented strength biodegradable formulation is PTFE (Polytetrafluoroethylene) They are commonly known as Teflon (name) for enhanced abrasion resistance and do not contain antioxidants and corrosion-resistant additives, odorless, dyeless & silicone free, just apply the right amount to your nuts, bridges, saddles and string guides when replacing your string.
The best feature is that the string sounds and sustains are not affected. Ideal for those with frequent changes in tuning or moving parts such as tremolo units.