Shaving unit configured to be used in an electric shaver, comprising a base member and at least one hair-cutting unit supported by the base member, wherein the hair-cutting unit comprises: - an external cutting member having a shaving surface provided with hair-entry openings; - an internal cutting member which is movable relative to the external cutting member; - a skin supporting member having a skin supporting surface surrounding the external cutting member; and - an adjustment mechanism configured to adjust, in an assembled and operational condition of the shaving unit and the hair-cutting units of the shaving unit, an exposure distance (d e) over which the shaving surface protrudes relative to the skin supporting surface in an exposure direction; characterized in that: - the external cutting member and the skin supporting member are jointly pivotal about a pivot axis which has a stationary position relative to the base member; - the adjustment mechanism comprises an adjustment member which is displaceable relative to the base member in a displacement direction in an imaginary plane perpendicular to the exposure direction for adjustment of the exposure distance (d e); - the adjustment member comprises a supporting surface which is inclined relative to the displacement direction; - one of the external cutting member and the skin supporting member is a bearing-supported member supported relative to the base member via a bearing allowing a rotation of the bearing-supported member about the pivot axis; and - the other one of the external cutting member and the skin supporting member is an adjustably supported member supported relative to the base member via the supporting surface of the adjustment member and a supporting element (33, 38, 43) in supporting contact with the supporting surface of the adjustment member, wherein, in each position of the adjustment member relative to the base member in the displacement direction, a rotation of the adjustably supported member about the pivot axis is defined by mutual movement of the supporting surface of the adjustment member and the supporting element (33, 38, 43) in supporting contact with each other. - an external cutting member having a shaving surface provided with hair-entry openings; - an internal cutting member which is movable relative to the external cutting member; - a skin supporting member having a skin supporting surface surrounding the external cutting member; and - an adjustment mechanism configured to adjust, in an assembled and operational condition of the shaving unit and the hair-cutting units of the shaving unit, an exposure distance (d e) over which the shaving surface protrudes relative to the skin supporting surface in an exposure direction; - the external cutting member and the skin supporting member are jointly pivotal about a pivot axis which has a stationary position relative to the base member; - the adjustment mechanism comprises an adjustment member which is displaceable relative to the base member in a displacement direction in an imaginary plane perpendicular to the exposure direction for adjustment of the exposure distance (d e); - the adjustment member comprises a supporting surface which is inclined relative to the displacement direction; - one of the external cutting member and the skin supporting member is a bearing-supported member supported relative to the base member via a bearing allowing a rotation of the bearing-supported member about the pivot axis; and - the other one of the external cutting member and the skin supporting member is an adjustably supported member supported relative to the base member via the supporting surface of the adjustment member and a supporting element (33, 38, 43) in supporting contact with the supporting surface of the adjustment member, wherein, in each position of the adjustment member relative to the base member in the displacement direction, a rotation of the adjustably supported member about the pivot axis is defined by mutual movement of the supporting surface of the adjustment member and the supporting element (33, 38, 43) in supporting contact with each other.