Device for cutting hair

A cutting head for a device for cutting hair that uses a laser beam, the laser beam having a longitudinal axis that extends in a first direction across a cutting zone along a user's skin during use of the device, the laser beam having an effective cutting region in which the laser beam is of a sufficient intensity to cut hair entering the region, the cutting head comprising:

• a guard adjacent to the cutting zone, that during use of the device, contacts the user's skin so that the user's skin conforms to the shape of the guard and spaces the laser beam from the user's skin,
• wherein the guard has a non-planar shape that extends in the first direction across the cutting zone so that the non-planar shape substantially follows a contour that extends in the first direction across the cutting zone, and wherein the contour defines an edge of the effective cutting region of the laser beam such that, during use of the device, any variation in a distance between the edge of the effective cutting region and the user's skin, which is in conformity with the shape of the guard, across a length of the cutting zone is reduced.