A non-invasive device for treatment of an inner skin layer using laser light, the device comprising: - a light source and an associated optical system for generating pulses of a laser treatment beam along a treatment optical axis of the device, the light source and the optical system being configured and arranged to provide, within a transverse cross-section of the laser treatment beam perpendicular to the treatment optical axis: - a first (22a,122a) and a second (22b,122b) beam region of non-zero light intensity disposed at a periphery of the transverse cross-section, and - a third beam region (22c,122c), arranged between the first (22a,122a) and the second (22b,122b) beam region, of lower light intensity than said non-zero light intensity; the optical system being further configured and arranged: - to focus, in use, the treatment laser beam to a focal spot in the inner skin layer disposed on the treatment optical axis; - to guide, in use, the laser treatment beam such that the laser treatment beam with the first (22a,122a) and the second (22b,122b) beam region passes along the treatment optical axis through an outer skin layer to the focal spot, whereby the first (22a,122a) and the second (22b,122b) beam region pass through, respectively, a first and a second skin region in the outer skin layer; wherein an extent of the third beam region (22c,122c) is predetermined and/or controlled to provide a corresponding third skin region in the outer skin layer, arranged between the first and the second skin region, wherein the lower light intensity of the third beam region is predetermined and/or controlled to provide a maximum temperature during a pulse of the laser treatment beam within the third skin region which is lower than maximum temperatures during said pulse of the laser treatment beam within the first and the second skin regions; wherein the light source is configured and arranged to provide, in use, a pulse duration of the pulse of the laser treatment beam which is longer than a thermal relaxation time of the first (23 a) and the second skin region; and characterized in that the optical system is configured and arranged to provide the laser treatment beam that is to impinge on a surface of the outer skin layer having a diameter that is approximately the same as the diameter of the laser treatment beam generated by the light source. - a light source and an associated optical system for generating pulses of a laser treatment beam along a treatment optical axis of the device, the light source and the optical system being configured and arranged to provide, within a transverse cross-section of the laser treatment beam perpendicular to the treatment optical axis: - a first (22a,122a) and a second (22b,122b) beam region of non-zero light intensity disposed at a periphery of the transverse cross-section, and - a third beam region (22c,122c), arranged between the first (22a,122a) and the second (22b,122b) beam region, of lower light intensity than said non-zero light intensity; the optical system being further configured and arranged: - to focus, in use, the treatment laser beam to a focal spot in the inner skin layer disposed on the treatment optical axis; - to guide, in use, the laser treatment beam such that the laser treatment beam with the first (22a,122a) and the second (22b,122b) beam region passes along the treatment optical axis through an outer skin layer to the focal spot, whereby the first (22a,122a) and the second (22b,122b) beam region pass through, respectively, a first and a second skin region in the outer skin layer; wherein an extent of the third beam region (22c,122c) is predetermined and/or controlled to provide a corresponding third skin region in the outer skin layer, arranged between the first and the second skin region, wherein the lower light intensity of the third beam region is predetermined and/or controlled to provide a maximum temperature during a pulse of the laser treatment beam within the third skin region which is lower than maximum temperatures during said pulse of the laser treatment beam within the first and the second skin regions; - a first (22a,122a) and a second (22b,122b) beam region of non-zero light intensity disposed at a periphery of the transverse cross-section, and - a third beam region (22c,122c), arranged between the first (22a,122a) and the second (22b,122b) beam region, of lower light intensity than said non-zero light intensity; - to focus, in use, the treatment laser beam to a focal spot in the inner skin layer disposed on the treatment optical axis; - to guide, in use, the laser treatment beam such that the laser treatment beam with the first (22a,122a) and the second (22b,122b) beam region passes along the treatment optical axis through an outer skin layer to the focal spot, whereby the first (22a,122a) and the second (22b,122b) beam region pass through, respectively, a first and a second skin region in the outer skin layer; wherein an extent of the third beam region (22c,122c) is predetermined and/or controlled to provide a corresponding third skin region in the outer skin layer, arranged between the first and the second skin region, wherein the lower light intensity of the third beam region is predetermined and/or controlled to provide a maximum temperature during a pulse of the laser treatment beam within the third skin region which is lower than maximum temperatures during said pulse of the laser treatment beam within the first and the second skin regions;