I fished a micro leader for the first time a few days ago and although I really liked that I could get good drifts at a greater distance, I also noticed that I couldn't really see my sighter as well as I needed or wanted to. A quick application of the red wax made a huge difference in spotting and tracking my sighter on those longer casts. I'll pick up a second contrasting color for different light situations.
Skafars Wax -Good Idea But Not Practical
On the positive side, the pink wax I purchased was very bright in the sunlight, exactly as advertised. On the negative side, it only lasted about an hour before mostly coming off. It also rubbed off on my 4X leader when wound on the real. It was difficult to 100% remove from the 4X fluoro. It also stains your fingers, which you need to wipe on something, the right knee of my waders in my case (a look I did not desire). Bottom line - good in an emergency when you have to create an on stream sighter, but not for general use.