The Shadow/Highlight command is one method for correcting photos with dark or dull images due to strong backlighting or correcting subjects that have been slightly washed out.The adjustment can also be used for brightening areas of shadow in an otherwise well‑lit image. The Shadow/Highlight adjustment that we are going to use is destructive in nature. So it’s better first to create a duplicate layer and then proceed. So press Ctrl+J/Cmd+J to duplicate your layer. Now go to Image>Adjustment>Shadow/Highlight. After clicking on Shadow/Highlights a new popup box will open which is loaded with two sliders i.e. Shadow and Highlight. To reveal more features, click on Show More.After clicking on Show More option your panel should look like this.