A bearded old man faces the viewer directly, his pale face emerging from the darkness that envelops the rest of the scene. His eyes look out from beneath heavy brows, their gaze steady and introspective, while his mouth is partly obscured by the thick, white beard that softens the lower half of his face. He wears a dark beret that sits low on his head, its rounded form casting a shadow across his forehead and blending into the deep, shadowy background.

The man's coat, also rendered in deep tones, is only faintly distinguishable from the surrounding darkness, with just a few highlights along the collar and shoulder to suggest its shape. Light falls strongly from the left, illuminating the man's forehead, nose, and the upper part of his beard, while the rest of his features dissolve into shadow, creating a dramatic contrast between light and dark. Rembrandt uses broad, confident brushstrokes to model the man's face and beard, with visible textures in the paint that give a sense of the sitter's age and character.

The background is painted in a nearly uniform, velvety black, pushing the figure forward and focusing attention entirely on the man's expression and presence. Close inspection reveals subtle variations in the whites and greys of the beard and hair, where the brushwork becomes especially lively and animated. The composition is tightly framed, with the man's head and shoulders filling almost the entire canvas, leaving little space around him and intensifying the sense of immediacy. The title An Old Man in Full Face identifies the sitter as an elderly man shown from the front, emphasizing the directness of his gaze and the dignity of his bearing.

The man’s beard and beret are characteristic features, both noted in the records and clearly visible in the image. This portrait was once part of the Adolphe Schloss collection, as documented in the museum source.