Sunburnt/Sunscald Trees

Hi all. I’m battling Japanese beetles (I hate those things more than I care to admit) and sprayed a few trees with soap/water after Bonide’s Japanese beetle spray didn’t work. Now, some of the leaves are browning. I am wondering if this may be sunscald/sunburnt leaves.

See pictures below. Thoughts? Any way to fix this?

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What is the active ingredient?

It was regular Dawn Dish soap.