In Head of a man, the viewer is presented with a striking portrait of a man. The colors are rich, with deep browns and muted earth tones dominating the palette. The figure is depicted with a serious expression, emphasizing the details of his face and the texture of his skin.

The background is subtle, allowing the focus to remain on the subject's features. The painting is executed in oil on canvas, a medium that allows for fine detail and depth. The brushwork is precise, capturing the nuances of light and shadow on the man's face. Viewers can appreciate the realism in the portrayal, as the artist has meticulously rendered the facial features and expressions.

The dimensions of the work are approximately 60 x 80 cm, making it a substantial piece. Gustave Vanaise was known for his realistic portrayals, often focusing on the human figure. Head of a man reflects his dedication to capturing the essence of his subjects. An interesting fact about this work is that it showcases Vanaise's ability to convey emotion through facial expression, a hallmark of his style.

This painting exemplifies the realism movement of the late 19th century.