FWIW, I've posted this here before with -0- response, but I will tell you, this isn't BS.
My Son has been a professional musician for over 20 years and is currently playing an average of 25 hours a week, plus 8-10 hours of studio work.
He sweats a lot when playing, and has a very high acid content in his system. The result of the combo is horrible. A set of strings a day, neck finishes seldom last more than 6 months. Even necks were being replaced at the rate of one a year depending on the environment.
Refinishing one of those necks was almost impossible. I searched for a long time for an answer, because we'd just get a neck broken in, and have to change it. I just kept on ready all the time.
Tru-Oil was the finish of choice after a while, but we still had the protection problem in some of the worst conditions around. East Texas humidity, and Honky Tonks, in the beer, blood and the mud so to speak. :)
He doesn't drink but you can't believe what happens to a guitar in those places...
Anyway, I stumbled on to the quite by accident, in fact I was looking to protect a 100 year old painting my Daughter has and was told by a curator this was the answer to my problem.
During out conversation, he expanded the uses of this stuff and the rest is history as they say.
His current one piece maple neck is almost 2 years old with no problems what so ever, either with the finish, OR the neck, OR the frets...(Except they still wear out HAHAHA) but his strings last full week now instead of one set...
I'll let you read about it yourself, it has a reputation unequaled in my opinion, and no, I don't own a dimes worth of this product, it's owned by the British I'm told...
Anyway here ya go...if it's OK for the face of the Mona Lisa, it's good enough for me..a little goes a LONG was, so don't let the price spook ya, he just ran out of the original 7 oz. container.
Oh yeah, if you haven't guessed, it contains NO silicone nor is it a wax as we know it...it's just amazing protect-ant that resists everything including alcohol and yet easily removes for restoration..
I hope this helps, if I were going to protect something like the gorgeous guitar in India this would be my choice for sure.