A shower head (10, 10') for use in bathing, including at least one droplet generator, the droplet generator including: a water inlet, an air inlet, and a droplet formation chamber; the droplet formation chamber defining a chamber axis extending in a flow direction and comprising in series arrangement along the chamber axis in the flow direction: an inlet region, a throat downstream of the inlet region, a divergent region of progressively increasing section area downstream of the throat, a convergent region of progressively reducing section area downstream of the divergent region, and an outlet at a downstream end of the convergent region, the convergent region being defined by a wall which surrounds the chamber axis upstream of an outlet plane normal to the chamber axis at the outlet; the water inlet and air inlet both opening into the inlet region; the air inlet extending around the chamber axis and comprising at least one air inlet passage defining a mean airflow path, the air inlet passage opening into the inlet region at an air inlet opening; the water inlet and air inlet being arranged so that in use, air flowing from the air inlet converges towards water flowing from the water inlet to form droplets of water suspended in air within the droplet formation chamber; the outlet being arranged to deliver said droplets intact from the shower head as a spray of droplets in which a user may bathe; the droplet formation chamber having: a section area S1 normal to the chamber axis at the throat; a section area S2 normal to the chamber axis at a downstream end of the divergent region; an axial length L1 from an upstream end of the divergent region at the throat to the outlet plane; in a plane normal to the chamber axis at the throat, a section area S1 corresponding to a nominal circle C1 of equal area and diameter D1 centred on the chamber axis; in a plane normal to the chamber axis at a downstream end of the divergent region, a section area S2 corresponding to a nominal circle C2 of equal area and diameter D2 centred on the chamber axis; in the outlet plane, a section area S3 corresponding to a nominal circle C3 of equal area and diameter D3 centred on the chamber axis; the divergent region having an axial length L2 and defining in a plane containing the chamber axis a divergence angle Ad between the chamber axis and either of a pair of nominal straight lines extending from C1 to C2 on opposite sides of the chamber axis; the convergent region having an axial length L3 and defining in a plane containing the chamber axis a convergence angle Ac between the chamber axis and either of a pair of nominal straight lines (56") extending from C2 to C3 on opposite sides of the chamber axis; characterised in that: when considered in a plane containing the chamber axis, a straight line extending the mean airflow path at the air inlet opening intersects the chamber axis at an impingement angle Ai in a range from 15° - 45°; the ratio L1: D1 is in the range from 2: 1 to 5: 1; D2 is not greater than 1.5 · D1; the ratio L2: L3 is in the range from 0.6: 1.4 to 1.4: 0.6; and the divergence angle Ad is in the range from 2.5° to 15°. a water inlet, an air inlet, and a droplet formation chamber; an inlet region, a throat downstream of the inlet region, a divergent region of progressively increasing section area downstream of the throat, a convergent region of progressively reducing section area downstream of the divergent region, and an outlet at a downstream end of the convergent region, the convergent region being defined by a wall which surrounds the chamber axis upstream of an outlet plane normal to the chamber axis at the outlet; a section area S1 normal to the chamber axis at the throat; a section area S2 normal to the chamber axis at a downstream end of the divergent region; an axial length L1 from an upstream end of the divergent region at the throat to the outlet plane; in a plane normal to the chamber axis at the throat, a section area S1 corresponding to a nominal circle C1 of equal area and diameter D1 centred on the chamber axis; in a plane normal to the chamber axis at a downstream end of the divergent region, a section area S2 corresponding to a nominal circle C2 of equal area and diameter D2 centred on the chamber axis; in the outlet plane, a section area S3 corresponding to a nominal circle C3 of equal area and diameter D3 centred on the chamber axis; when considered in a plane containing the chamber axis, a straight line extending the mean airflow path at the air inlet opening intersects the chamber axis at an impingement angle Ai in a range from 15° - 45°; the ratio L1: D1 is in the range from 2: 1 to 5: 1; D2 is not greater than 1.5 · D1; the ratio L2: L3 is in the range from 0.6: 1.4 to 1.4: 0.6; and the divergence angle Ad is in the range from 2.5° to 15°.