An attachment for a hand held appliance, the attachment including a first wall wherein the first wall defines a fluid flow path through the attachment extending from an annular first fluid inlet into the attachment to a first fluid outlet, wherein the fluid flow path has a cross-sectional area that expands from the first fluid inlet towards the first fluid outlet. The attachment may include a first part and a second part and the first part extends from the first fluid inlet towards the first fluid outlet and the second part extends from the first fluid outlet towards the first fluid inlet and wherein the cross-sectional area expands within the first part. The first part may be conical in shape. The second part may be elliptical or generally rectangular in shape.