A method of treating a plastic article comprising: (a) providing a plastic article comprising at least one polymer selected from thermoplastic polymer and thermoset polymer; (b) contacting at least a portion of the surface of said plastic article with a treatment composition comprising, (i) at least one additive selected from UV stabilizers, (ii) 50 to less than 85 percent by weight of water based on the total weight of the treatment composition, (iii) at least one carrier in an amount of 10 to 30 percent by weight of based on the total weight of the treatment composition represented by the following general formula I, wherein R 1 is a radical selected from the group consisting of linear or branched C 1 -C 18 alkyl, benzyl, benzoyl and phenyl, R 2 is a radical selected from the group consisting of linear or branched C 1 -C 18 alkyl, benzyl, benzoyl, phenyl and H, n is 2, 3 or 4, and m is 1 to 35, and (iv) 5 to 20 percent by weight of based on the total weight of the treatment composition of a diol selected from at least one of linear or branched C 2 -C 20 aliphatic diols, poly(C 2 -C 4 alkylene glycol), cycloaliphatic diols having from 5 to 8 carbon atoms in the cyclic ring, monocyclic aromatic diols, bisphenols and hydrogenated bisphenols, wherein the total weight of the treatment composition is 100 percent; (c) maintaining said portion of said plastic article in contact with said treatment composition for a period of time at least sufficient to form a treated plastic article; and (d) removing said treated plastic article from contact with said treatment composition. (a) providing a plastic article comprising at least one polymer selected from thermoplastic polymer and thermoset polymer; (b) contacting at least a portion of the surface of said plastic article with a treatment composition comprising, (i) at least one additive selected from UV stabilizers, (ii) 50 to less than 85 percent by weight of water based on the total weight of the treatment composition, (iii) at least one carrier in an amount of 10 to 30 percent by weight of based on the total weight of the treatment composition represented by the following general formula I, wherein R 1 is a radical selected from the group consisting of linear or branched C 1 -C 18 alkyl, benzyl, benzoyl and phenyl, R 2 is a radical selected from the group consisting of linear or branched C 1 -C 18 alkyl, benzyl, benzoyl, phenyl and H, n is 2, 3 or 4, and m is 1 to 35, and (iv) 5 to 20 percent by weight of based on the total weight of the treatment composition of a diol selected from at least one of linear or branched C 2 -C 20 aliphatic diols, poly(C 2 -C 4 alkylene glycol), cycloaliphatic diols having from 5 to 8 carbon atoms in the cyclic ring, monocyclic aromatic diols, bisphenols and hydrogenated bisphenols, wherein the total weight of the treatment composition is 100 percent; (i) at least one additive selected from UV stabilizers, (ii) 50 to less than 85 percent by weight of water based on the total weight of the treatment composition, (iii) at least one carrier in an amount of 10 to 30 percent by weight of based on the total weight of the treatment composition represented by the following general formula I, wherein R 1 is a radical selected from the group consisting of linear or branched C 1 -C 18 alkyl, benzyl, benzoyl and phenyl, R 2 is a radical selected from the group consisting of linear or branched C 1 -C 18 alkyl, benzyl, benzoyl, phenyl and H, n is 2, 3 or 4, and m is 1 to 35, and (iv) 5 to 20 percent by weight of based on the total weight of the treatment composition of a diol selected from at least one of linear or branched C 2 -C 20 aliphatic diols, poly(C 2 -C 4 alkylene glycol), cycloaliphatic diols having from 5 to 8 carbon atoms in the cyclic ring, monocyclic aromatic diols, bisphenols and hydrogenated bisphenols, wherein the total weight of the treatment composition is 100 percent; (c) maintaining said portion of said plastic article in contact with said treatment composition for a period of time at least sufficient to form a treated plastic article; and (d) removing said treated plastic article from contact with said treatment composition.