Skin for dressing backlit vehicle interior parts comprising: - an opaque decorative layer having: a front side (2.1) and a back side (2.2) several through holes (2.3), each one having a diameter less than 2.5 mm, - a light transmitting filler comprising a reactive hotmelt adhesive having: a base layer (3.1) extended over the back side (2.2) of the opaque decorative layer and comprising a central portion (3.1.3) and a transition portion (3.1.4) surrounding the central portion (3.1.3), several projections (3.2) protruding from the central portion (3.1.3) of the base layer (3.1) and completely filling the through holes (2.3), each projection (2.3) comprising: a bottom end (3.2.1) connecting the projection (3.2) to the base layer (3.1) and a light exit part (3.2.2) being flush with the front side (2.1) of the opaque decorative layer, wherein the reactive hotmelt adhesive has a dynamic viscosity between 10.000 cPs and 30.000 cPs at a temperature between 110 and 170 °C, wherein the central portion (3.1.3) has a constant thickness of less than 0.25 mm; and the transition portion (3.1.4) has a width of at least 5 mm, wherein its thickness progressively decreases from a thickness less than 0.25 mm to a thickness of 0 mm at the periphery of the base layer (3.1). - an opaque decorative layer having: a front side (2.1) and a back side (2.2) several through holes (2.3), each one having a diameter less than 2.5 mm, a front side (2.1) and a back side (2.2) several through holes (2.3), each one having a diameter less than 2.5 mm, - a light transmitting filler comprising a reactive hotmelt adhesive having: a base layer (3.1) extended over the back side (2.2) of the opaque decorative layer and comprising a central portion (3.1.3) and a transition portion (3.1.4) surrounding the central portion (3.1.3), several projections (3.2) protruding from the central portion (3.1.3) of the base layer (3.1) and completely filling the through holes (2.3), each projection (2.3) comprising: a bottom end (3.2.1) connecting the projection (3.2) to the base layer (3.1) and a light exit part (3.2.2) being flush with the front side (2.1) of the opaque decorative layer, wherein the reactive hotmelt adhesive has a dynamic viscosity between 10.000 cPs and 30.000 cPs at a temperature between 110 and 170 °C, wherein the central portion (3.1.3) has a constant thickness of less than 0.25 mm; and the transition portion (3.1.4) has a width of at least 5 mm, wherein its thickness progressively decreases from a thickness less than 0.25 mm to a thickness of 0 mm at the periphery of the base layer (3.1). a base layer (3.1) extended over the back side (2.2) of the opaque decorative layer and comprising a central portion (3.1.3) and a transition portion (3.1.4) surrounding the central portion (3.1.3), several projections (3.2) protruding from the central portion (3.1.3) of the base layer (3.1) and completely filling the through holes (2.3), each projection (2.3) comprising: a bottom end (3.2.1) connecting the projection (3.2) to the base layer (3.1) and a light exit part (3.2.2) being flush with the front side (2.1) of the opaque decorative layer, wherein the reactive hotmelt adhesive has a dynamic viscosity between 10.000 cPs and 30.000 cPs at a temperature between 110 and 170 °C, wherein the central portion (3.1.3) has a constant thickness of less than 0.25 mm; and the transition portion (3.1.4) has a width of at least 5 mm, wherein its thickness progressively decreases from a thickness less than 0.25 mm to a thickness of 0 mm at the periphery of the base layer (3.1). a bottom end (3.2.1) connecting the projection (3.2) to the base layer (3.1) and a light exit part (3.2.2) being flush with the front side (2.1) of the opaque decorative layer, wherein the reactive hotmelt adhesive has a dynamic viscosity between 10.000 cPs and 30.000 cPs at a temperature between 110 and 170 °C, wherein the central portion (3.1.3) has a constant thickness of less than 0.25 mm; and the transition portion (3.1.4) has a width of at least 5 mm, wherein its thickness progressively decreases from a thickness less than 0.25 mm to a thickness of 0 mm at the periphery of the base layer (3.1).