There are many uses for this layer, but I tend to use it to color grade pictures.
To achieve the greatest results when utilizing the Selective Color, I'll go over how to change colors and how to use the color wheel.

In this simple tutorial, you will discover how to choose and modify colors in Photoshop CC.
With the help of Photoshop Selective Color in Photoshop CC, you can change the colors in a specific range. Create a new layer in Photoshop and choose Select - Color Range to select a range of colors.