I like it. OK: I'm going to drop this here. This is a "secret sauce" I discovered myself about 10 years ago. It's the best non-stick treatment I've encountered, and I've never seen anybody else be aware of it, and to my knowledge this is the 1st time anybody's ever posted about it on an internet forum, or any other venue, for saxophones. Probably, in 10 years, if I'm still posting on internet forums (this covers "...breathing") someone will take me to task for not being aware of it if I move on to something else and post about that.
Sailkote is the easy-to-apply high-tech, high-performance dry lubricant that makes sails, hulls, rigging, deck hardware, and anything that moves on your boat run smoother, work more efficiently, and last longer than you ever thought possible. Size: 8oz
shop.melges.com
WARNING: you should READ THE WARNING LABEL and research the ingredients for yourself before using it. My actual experience is that it's not a great idea to play the horn before the "McLube" is dry. There are almost certainly carcinogens in the material itself, and I feel like on those occasions when I was impatient and played while the "McLube" was still wet (and smelly) I felt some lung irritation, which seems to happen mostly when impatient, so I self-diagnose it being more related to the solvent.
US$20 is a bit high for the small can, pretty good for the big can.
What this is: a teflon lubricant that dries dry and non-tacky. It seems to have some waterproofing qualities -- it's meant for use in sail rigging, etc., so "duh" -- but I've never done any kind of test to see about that in detail. I use it primarily for nonstick pad treatment. It does leave a white film.
The vast majority of my clients have been aware of this for years, and have kept it a secret, which I really, really appreciate (for any of you seeing this now, having been so kind as to keep my secret for about the last decade).
There are a lot of little details in how to use this, and what happens to its performance under different conditions. If you do a G#, and get an effective result right away, you're probably golden for months. If you have problems fairly soon afterward, you likely have tonehole burrs or binding keytubes/pivots or need to adjust spring tensions.