A packaged product comprising: A) a plastic container for protecting a light-sensitive liquid composition from light comprising: i) a top; ii) a bottom opposing to the top; iii) a first layer extending from the top to the bottom, wherein the first layer is non-opaque; and iv) a second layer superposed with a part of the first layer forming a superposed area, wherein the second layer comprises a blocking agent; wherein the container comprises a non-superposed area covering the bottom, where the first layer is not superposed with the second layer, the non-superposed area comprising a height h of from about 2 mm to about 50 mm; and B) a light-sensitive composition contained in the plastic container, wherein the light-sensitive composition is sensitive to light of a wavelength λ, and where in the blocking agent blocks light of the wavelength λ, characterised in that the container comprises one of the following features: a) the container extends in a height direction from the top to the bottom, wherein the second layer, comprises a second layer thickness, and wherein the second layer thickness gradually decreases from the top to the bottom in the height direction; or b) the container comprises a border line between the non-superposed area and the superposed area, and wherein the border line obliquely runs to the bottom. A) a plastic container for protecting a light-sensitive liquid composition from light comprising: i) a top; ii) a bottom opposing to the top; iii) a first layer extending from the top to the bottom, wherein the first layer is non-opaque; and iv) a second layer superposed with a part of the first layer forming a superposed area, wherein the second layer comprises a blocking agent; wherein the container comprises a non-superposed area covering the bottom, where the first layer is not superposed with the second layer, the non-superposed area comprising a height h of from about 2 mm to about 50 mm; and i) a top; ii) a bottom opposing to the top; iii) a first layer extending from the top to the bottom, wherein the first layer is non-opaque; and iv) a second layer superposed with a part of the first layer forming a superposed area, B) a light-sensitive composition contained in the plastic container, wherein the light-sensitive composition is sensitive to light of a wavelength λ, and where in the blocking agent blocks light of the wavelength λ, characterised in that the container comprises one of the following features: a) the container extends in a height direction from the top to the bottom, wherein the second layer, comprises a second layer thickness, and wherein the second layer thickness gradually decreases from the top to the bottom in the height direction; or b) the container comprises a border line between the non-superposed area and the superposed area, and wherein the border line obliquely runs to the bottom. a) the container extends in a height direction from the top to the bottom, wherein the second layer, comprises a second layer thickness, and wherein the second layer thickness gradually decreases from the top to the bottom in the height direction; or b) the container comprises a border line between the non-superposed area and the superposed area, and wherein the border line obliquely runs to the bottom.