Individually edit Highlights and Shadows.
The Highlights and Shadows sliders allow you to brighten or dim the lighter parts or darker parts of an image separately. For example, bring the shadows up to show the detail in a black cat’s fur without losing the detail in its light-colored eyes. Or, bring the highlights down to reveal the detail in a bride’s white dress without losing the detail in a groom’s black tuxedo.
Fine-tune the black and white tones in your image.
As the finishing touch, use the Blacks and Whites sliders to increase or decrease the tones in your image that approach pure white or pure black. For example, if you have a photo of a sky dappled with white clouds, you may want to increase the exposure for overall brightening, yet reduce the Whites slider to show more detail in the clouds.
Use the Auto button for instant enhancement.
At the top of the Edit panel, click Auto to have Lightroom automatically apply the best edits using Adobe’s innovative image intelligence. Auto will adjust several slider controls from the Light panel at once: Exposure, Contrast, Highlights, Shadows, Whites, Blacks, Saturation, and Vibrance. It will also apply automatic lens correction to remove unwanted distortion.