I can't tell because I layered Z2 over Z5. However, I did notice that the reflections became more distinct after applying Z2. But there's no way to tell if the improvement in reflections was due to Z2 ALONE or because of the total of 6 layers applied - 3 for Z5 and another 3 for Z2.
They say that Z5 fills the swirls but I was disappointed over this claim. After 3 layers of Z5 the few swirls that were present before application were still there.





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