A polyoxymethylene composition comprising: (a) from 50 to 99.5 weight percent of at least one polyoxymethylene polymer selected from the group consisting of homopolymer, copolymer and mixtures of these; (b) from 0.5 to 10 weight percent of at least one polymer; (c) from 0 to 30 weight percent of one or more fillers; and (d) from 0 to 10 weight percent of additives, wherein: the total weight percent of (a), (b), (c), and (d) is 100 percent, wherein: the at least one polymer of (b) is selected from the group consisting of: one or more polymers having a core-link-arm structure such that: the core comprises one or more carbon atoms, none of which is a carbonate carbon, and is attached to at least three arms; one or more polymers having a core-link-arm structure such that: each arm comprises a repeating unit, the core has a molecular weight of greater than 45, does not comprise the repeating unit of the arm, and is attached to more than one arm; and the mass ratio of arms to core in the core-link-arm structure is greater than 3; and one or more polyols having a core-link-arm structure such that: the core has a molecular weight from 118 to 1000; each link is selected from the group consisting of a bond, •O•, •CH 2 O•, and any combination of these; and any combination of,, and, and wherein: the core of the core-link-arm structure comprises a multiradical of three or more radical groups, the repeating units of the arm of the core-link-arm structure are diradicals, and the number average molecular weight of each arm in the core-link-arm structure of the at least one polymer b) ranges from 500 to 10,000. (a) from 50 to 99.5 weight percent of at least one polyoxymethylene polymer selected from the group consisting of homopolymer, copolymer and mixtures of these; (b) from 0.5 to 10 weight percent of at least one polymer; (c) from 0 to 30 weight percent of one or more fillers; and (d) from 0 to 10 weight percent of additives, the at least one polymer of (b) is selected from the group consisting of: one or more polymers having a core-link-arm structure such that: the core comprises one or more carbon atoms, none of which is a carbonate carbon, and is attached to at least three arms; one or more polymers having a core-link-arm structure such that: each arm comprises a repeating unit, the core has a molecular weight of greater than 45, does not comprise the repeating unit of the arm, and is attached to more than one arm; and the mass ratio of arms to core in the core-link-arm structure is greater than 3; and one or more polyols having a core-link-arm structure such that: the core has a molecular weight from 118 to 1000; each link is selected from the group consisting of a bond, •O•, •CH 2 O•, and any combination of these; and any combination of,, and, and one or more polymers having a core-link-arm structure such that: the core comprises one or more carbon atoms, none of which is a carbonate carbon, and is attached to at least three arms; the core comprises one or more carbon atoms, none of which is a carbonate carbon, and is attached to at least three arms; one or more polymers having a core-link-arm structure such that: each arm comprises a repeating unit, the core has a molecular weight of greater than 45, does not comprise the repeating unit of the arm, and is attached to more than one arm; and the mass ratio of arms to core in the core-link-arm structure is greater than 3; and each arm comprises a repeating unit, the core has a molecular weight of greater than 45, does not comprise the repeating unit of the arm, and is attached to more than one arm; and the mass ratio of arms to core in the core-link-arm structure is greater than 3; and one or more polyols having a core-link-arm structure such that: the core has a molecular weight from 118 to 1000; each link is selected from the group consisting of a bond, •O•, •CH 2 O•, and any combination of these; and the core has a molecular weight from 118 to 1000; each link is selected from the group consisting of a bond, •O•, •CH 2 O•, and any combination of these; and any combination of,, and, and the core of the core-link-arm structure comprises a multiradical of three or more radical groups, the repeating units of the arm of the core-link-arm structure are diradicals, and the number average molecular weight of each arm in the core-link-arm structure of the at least one polymer b) ranges from 500 to 10,000.