The tool can that can effectively lower the harsh glare from the sun on the three faces is Blur tool.
A Dehaze Tool is known to be of the most useful tools in Photoshop and Lightroom to reduce glare problem.
Note that the sun will make the image to be sharp and as such, it is better to use the blur tool to tune it down.
Therefore, The tool can that can effectively lower the harsh glare from the sun on the three faces is Blur tool.
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