I was so scared to spray the brand new vachetta on my Azur Speedy 30! I think I read just about every thread possible on treating vachetta, which can almost be more confusing than helpful. I finally decided on Wilson's and I just sprayed today. It worked perfectly! No dark spots, or anything! This stuff dries immediately! Just wanted to recommend incase anyone was sitting on the fence, as I was. I'll keep you posted on how it wears.