In Portrait de Mme Valtat les mains derrière la tête, we see a woman posed with her hands behind her head. The colors are vibrant, with a mix of warm and cool tones that create a lively atmosphere. The background is relatively simple, allowing the figure to stand out prominently.

The woman's expression is calm and confident, adding depth to her character. The painting is executed in oil on canvas, a medium that allows for rich color application and texture. The brushwork is loose yet deliberate, typical of the Post-Impressionism style. The dimensions are approximately 60 x 80 cm, making it a medium-sized work that invites close inspection.

The composition draws the viewer's eye directly to the subject's face and hands. Louis Valtat, a French painter associated with the Post-Impressionism movement, often explored themes of color and light in his works. This portrait is particularly interesting as it showcases his ability to blend traditional portraiture with modern techniques. Valtat was known for his vibrant use of color, which is evident in this piece.

The pose of the subject, with her hands behind her head, adds a contemporary twist to the classic portrait format.