In photo editing, brilliance is a tool that adjusts the mid-tone contrast in an image, increasing the contrast between the shadows and highlights while simultaneously increasing the overall contrast of the image. It can be used to improve the quality of the shadows and highlights of a photo, making it look richer and more vibrant, brightening dark areas, pulling in highlights, and adding contrast to reveal hidden detail. The brilliance adjustment can be used to highlight darker areas that are in shadow, similar in effect to the shadows or highlights adjustment. It is a color-neutral adjustment, meaning that no saturation is applied, but there may be a perceived change in color because brighter images with more contrast appear more vibrant. The brilliance adjustment is available in Apple Photos on iPhone, iPad, and Mac apps.