Sofa cushion was first cleaned with 1Z deep plastic cleaner(excellent for cleaning coated leather) and a leather scrub brush, then wiped clean with a damp towel.
Few minutes later, Optimum leather protectant(aka optimum protectant plus) was applied to the right side with a foam applicator. Next, 1Z leather care was applied with a foam applicator on the left. I put another coat of 1Z to remove those 4 spots in the middle. It removed them, but still streaked and splotched.
I was not working in direct sunlight. I took the picture outside so I could get the best light.
To me, I can can clearly see optimum leather protectant has a much more uniform application. 1Z seems to streak and splotch. A win for optimum, IMO.
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