A personalizable security document comprising: a laminated body formed by a plurality of layers (4, 5, 6, 7, 8) of at least one first material arranged on top of each other in a thickness direction (d), the body having a first side and a second side opposite to the first side in the thickness direction; and a security feature embedded in the body, wherein the security feature includes: a substrate; a laser-sensitive material provided on the substrate; and a protective material provided over the laser-sensitive material to separate the laser-sensitive material from a first layer of the plurality of layers arranged on top of the security feature, the protective material being formed by a material that is different from the at least one first material of the plurality of layers (4, 5, 6, 7, 8), wherein at least portions of the layers (4, 5) arranged on top of the laser-sensitive material are transparent to visible light such that a color feature produced upon irradiation of the laser-sensitive material with laser light is visible from the first side, the security document being characterised in that the protective material is configured as a glass barrier, or as a silica layer or another glass-like layer deposited on the laser-sensitive material. a laminated body formed by a plurality of layers (4, 5, 6, 7, 8) of at least one first material arranged on top of each other in a thickness direction (d), the body having a first side and a second side opposite to the first side in the thickness direction; and a security feature embedded in the body, wherein the security feature includes: a substrate; a laser-sensitive material provided on the substrate; and a protective material provided over the laser-sensitive material to separate the laser-sensitive material from a first layer of the plurality of layers arranged on top of the security feature, the protective material being formed by a material that is different from the at least one first material of the plurality of layers (4, 5, 6, 7, 8), wherein at least portions of the layers (4, 5) arranged on top of the laser-sensitive material are transparent to visible light such that a color feature produced upon irradiation of the laser-sensitive material with laser light is visible from the first side, the security document being characterised in that the protective material is configured as a glass barrier, or as a silica layer or another glass-like layer deposited on the laser-sensitive material. a substrate; a laser-sensitive material provided on the substrate; and a protective material provided over the laser-sensitive material to separate the laser-sensitive material from a first layer of the plurality of layers arranged on top of the security feature, the protective material being formed by a material that is different from the at least one first material of the plurality of layers (4, 5, 6, 7, 8), wherein at least portions of the layers (4, 5) arranged on top of the laser-sensitive material are transparent to visible light such that a color feature produced upon irradiation of the laser-sensitive material with laser light is visible from the first side, the security document being characterised in that the protective material is configured as a glass barrier, or as a silica layer or another glass-like layer deposited on the laser-sensitive material.