In this tutorial by Aaron Nace from Phlearn, learn how to add realistic freckles to a face in Photoshop by creating a custom brush.
The process begins with using a photo of granite to create an organic freckle texture. You'll select the desired color range, create a black-and-white template, and define a brush preset. Adjust brush settings like shape dynamics and spacing for the best results. Apply the freckles on multiple layers for depth, using a layer mask to fade freckles in unwanted areas.
Finish by grouping the freckle layers and masking out eyes and mouth. Create your own brush or download the Phlearn Freckle Brush.