Skin treatment device

A skin treatment device comprising:

• a body;
• a light source housed within the body and configured to deliver light energy pulses;
• a control system configured to control the light source to deliver the light energy pulses;
• a primary lightguide configured to guide the light energy pulses from the light source onto a subject's skin, wherein the primary lightguide comprises a solid material through which the light energy pulses are transmitted, and wherein the solid material defines a first skin contact surface for providing contact with the subject's skin;
• a cooling arrangement configured to cool the solid material;
• and
• a head configured to be mountable and demountable to the body, wherein the head comprises:
• a rearward end for releasably mounting to the body;
• a forward end comprising a second skin contact surface;
• and
• a secondary lightguide defining a light energy pulse transmission channel extending between the forward end and rearward end;
• wherein the rearward end extends to the forward end;
• wherein the second skin contact surface defines an opening to the light energy pulse transmission channel;
• and
• wherein the second skin contact surface extends around at least a part of a periphery of the opening;
• wherein the device is configured to be operable in a first operable configuration with the head demounted from the body and in a second operable configuration where the head is mounted to the body, such that in the second operable configuration, the first skin contact surface is spaced apart from the subject's skin and the light energy pulses pass through both the solid material of the primary lightguide and the light energy pulse transmission channel of the secondary lightguide.