Here's more from Music Nomad:

Stop tuning between every song! MusicNomad's TUNE-IT is your personal guitar tech to stay in tune longer & reduce string breakage. Our pro strength formulation is like no other & contains anti-wear, anti oxidants & anti corrosion additives fortified with PTFE. Odorless, non-staining & silicone free. Apply to Nut Slot, Bridge, Saddle and String Guides every string change. Most importantly, it does not affect the sound or sustain of the strings. Great for moving parts, such as open tuners & tremolo bars. A little goes a long way to help you sound the best. 

• Ideal for Nut Slots, Bridge, Saddle, String Guides and Any Moving Parts

• Helps you Stay in Tune

• Reduces String Breakage

• Reduces Friction & Wear

• Eliminates "Ping" Sounds

• Petroleum & Silicone Free

• Small Fine Tip Applicator Included to apply TUNE-IT in any hard to reach or tight areas

• Odorless & Non-Staining

• Non Melting, Water & Steam Resistant

• Protects against Rust & Corrosion

• Low Coefficient of Friction

• Specially designed Syringe like Orifice Distributes Gel Evenly and Finite

• Perfect for Guitar, Bass, Mandolin, Banjo, Ukulele