Wow! After reading all the posts about this I took the plunge and got a can of this off amazon.com. My Mom always taught me to test something on an area where it won't show, just in case . SO...I chose an oft-talked about area...invisible yet somehow vulnerable...the bottom of the Cabas Piano! And y'know what? It turned out great! I sprayed the vachetta and I initially freaked when it turned darker from the spray but it dried almost immediately back to its original light color! And there is no stickiness. Now, I can't say how much this will slow down the patina process, and I know I'm contradicting my earlier posts about wanting to just enjoy the natural process, but I hafta admit I was super curious! :shame: I guess as with anything "your mileage may vary" but for me is a hit!