Abstract: The rearward wash basin has a neck cutout (5) for performing a rearward head or hair washing and a soft elastic neck seal (6) lining the neck cutout. In order to fit the neck of the individual whose head or hair is being washed, the soft elastic neck seal (6) is in the form of a first bellows (8) with folds (9), the neck seal (6) is provided with a hollow chamber (7) and the folds (9) have a curvature essentially corresponding to that of the neck cutout (5). The neck seal (6) can be equipped with an expansive displacement device (10, 10.1), which adjusts the neck seal to the user's neck.

Abstract: The invention relates to a rearward wash basin (1) comprising a neck cutout (5) for performing a rearward head or hair washing, whereby the area of the neck cutout (5) is lined with a flexible neck seal (6). The neck seal (6) has a hollow chamber (7) and is provided in the form of bellows (8). The folds (9) have a curvature that essentially corresponds to that of the neck cutout (5).