Slide O Mix Rapid Comfort

It is the absolute simplest slide grease you can use, and it works really well. I only use this now since it is so easy and works so well.

+It stays on for long
+Super easy to apply
+The bottle is small but lasts for a long time
+You actually only need this bottle,

I play a few times a week on a thomann trombone, and I only need to grease the slide once a week at most, one bottle lasts about 7 months for me
(a cloth and water sprayer for more thorough application is good)
It is this easy to apply if you just want to do it quickly:
Shake the slide o mix bottle
Apply the slide o mix
Done

(otherwise if you want to be more thorough and you are not in a hurry, use a cloth to clean the slide first and then spray water, but just the slide o mix is enough)