Nu dans le Bain (Nude in the Bath) is the most iridescent of the five variations of Marthe dans la baignoire (Martha in the Bathtub), and also bears witness to a body-to-body encounter with the "subject".

In this composition, as in an echo chamber, reflective surfaces (water, wet skin, tiles and window reflection, linoleum floor with diamond pattern) are multiplied, punctuated by vertical and horizontal planes. The painter creates a flamboyant reliquary of languid flesh: sunny yellow next to cooler blues and violet, a slowly corroding color with a deferred yield, as André Lhote remarks, produce the impression of the body dissolving in light; or, on the contrary, the light may reveal the body, requiring the viewer to pause for a moment, as if to rediscover the initial dazzle - sensation, emotion.