Blending modes are some of the most useful functions in Photoshop, and yet, they are often overlooked, which is a shame, because they offer a ton of power and versatility for dialing in the exact edits you want, whether subtle and understated or an entire overhaul of an image. One of the most useful blending modes is the darken mode, and this excellent video tutorial will show you how to use it to add a bit of mood to an image.