It’s a great tool that should be firmly embedded in your workflow.
These sliders can be used to target particular colors, such as sky or grass, HSL can be used to correct specific colors and even skin tones. They essentially work the same, but the smart selector is a little different in each. Watch the video above to see these tools in action, I show you both Camera Raw (in Photoshop CC) and the HSL in Lightroom Classic. (L) Luminance = The lightness of the color.(S) Saturation = The amount of the color.
I hope this tutorial helps you to understand and Use HSL in Photoshop and Lightroom.