Device for acquiring a video of skin alterations of a user , the user having a face comprising at least one skin alteration and two eyes , the skin alteration(s) being permanent alterations or alterations that appear during a movement of the face of the user , the device comprising: - a frame intended to be placed on the face of the user in front of the eyes of the user , and - a camera fixed on the frame , the camera comprising a field of vision, the camera being fixed on the frame such that a part of the face of the user is indirectly in the field of vision of the camera when the frame is placed on the face of the user in front of the eyes of the user , said part of the face comprising the or at least one skin alteration , and an image of said part of the face being intended to be acquired by the camera , the camera comprising an objective not oriented directly towards the part of the face to be acquired by the camera , - a first optical reflection unit oriented such that at least some of the light waves emitted by the part of the face for which the image is to be acquired are reflected to the objective of the camera , the first optical reflection unit comprising two mirrors positioned such that the video acquired by the camera is a stereoscopic video - at least one lighting unit fixed to the frame , the lighting unit being capable of lighting at least part of the face directly or indirectly in the field of vision of the camera and that will be acquired by the camera , the lighting unit being not oriented directly towards the part of the face intended to be acquired by the camera , and - a second optical reflection unit oriented such that at least some of the light waves emitted by the lighting unit are reflected to said part of the face . - a frame intended to be placed on the face of the user in front of the eyes of the user , and - a camera fixed on the frame , the camera comprising a field of vision, the camera being fixed on the frame such that a part of the face of the user is indirectly in the field of vision of the camera when the frame is placed on the face of the user in front of the eyes of the user , said part of the face comprising the or at least one skin alteration , and an image of said part of the face being intended to be acquired by the camera , the camera comprising an objective not oriented directly towards the part of the face to be acquired by the camera , - a first optical reflection unit oriented such that at least some of the light waves emitted by the part of the face for which the image is to be acquired are reflected to the objective of the camera , the first optical reflection unit comprising two mirrors positioned such that the video acquired by the camera is a stereoscopic video - at least one lighting unit fixed to the frame , the lighting unit being capable of lighting at least part of the face directly or indirectly in the field of vision of the camera and that will be acquired by the camera , the lighting unit being not oriented directly towards the part of the face intended to be acquired by the camera , and - a second optical reflection unit oriented such that at least some of the light waves emitted by the lighting unit are reflected to said part of the face . <EOS>