ALU EFFECT is not a color, but a filter : it will always reflect the underlying colors.
More layers added on a surface, the brighter and more uniform the effect will be. With a bit more patience than a solvent based metallic solid color, a deep,scaled down and realistic color is achieved.
Pre-painting different panels in different plain colors, a multi-metal surface is obtained.
The HAVE GLASS finish of modern fighters is easily obtained with a lone diffused layer of ALU EFFECT over palin, non metallic paints.
Employment : paint your model in the desired plain colors. I.E. for an aluminium aircraft paint it white and the lightest grays. For burnt exhausts paint it brownish yellow. Then add as many uniform thin layers of ALU EFFECT as you like. The latest layers must be more and more thinned down.
Thinning and tools cleaning : water or for airbrush the best is with specific acryl-colors thinners, otherwise isoprophyl alcohol.
Masking : when well dry, after some hours masking is no problem
Dry time : few minutes.