A personal care device with a treatment head being pivot-mounted around a pivot axis (A) with respect to a body of the personal care device , the personal care device comprising: a pin having a pin head , the pin being provided at one of the treatment head or body ; a cam element having a cam surface being provided at the other one of the treatment head or body ; a spring element biasing the pin head and the cam surface against each other; wherein the pin head is in contact with the cam surface and the cam surface is shaped such that it defines a rest position at which the biasing spring force provided by the spring element with which the pin head and the cam surface are pushed against each other has a non-zero minimum value; wherein a pivoting of the head around the pivot axis (A) causes the pin head to move along the cam surface and the cam surface is further shaped such that the spring force (F) pushing the pin head and the cam surface against each other increases with increasing pivoting angle (α); and characterized in that the pin head has a contact surface for contacting the cam surface , which contact surface is at least a portion of a spherical surface or of a cylindrical surface and the cam surface has a depression to define the rest position, the depression being smaller than a diameter of the sphere defining the spherical surface or of the cylinder defining the cylindrical surface and the depression being smaller in diameter than the diameter of the pin head and being smaller than the size of the contact surface so that the contact surface of the pin head ( has two point-like or line-like contact regions (CP1, CP2) with the cam surface in the rest position. a pin having a pin head , the pin being provided at one of the treatment head or body ; a cam element having a cam surface being provided at the other one of the treatment head or body ; a spring element biasing the pin head and the cam surface against each other; wherein the pin head is in contact with the cam surface and the cam surface is shaped such that it defines a rest position at which the biasing spring force provided by the spring element with which the pin head and the cam surface are pushed against each other has a non-zero minimum value; wherein a pivoting of the head around the pivot axis (A) causes the pin head to move along the cam surface and the cam surface is further shaped such that the spring force (F) pushing the pin head and the cam surface against each other increases with increasing pivoting angle (α); and characterized in that the pin head has a contact surface for contacting the cam surface , which contact surface is at least a portion of a spherical surface or of a cylindrical surface and the cam surface has a depression to define the rest position, the depression being smaller than a diameter of the sphere defining the spherical surface or of the cylinder defining the cylindrical surface and the depression being smaller in diameter than the diameter of the pin head and being smaller than the size of the contact surface so that the contact surface of the pin head ( has two point-like or line-like contact regions (CP1, CP2) with the cam surface in the rest position. <EOS>