A polyamide composition comprising a) 30% to 99.9% by weight of a polyamide mixture as component A) composed of aliphatic polyamide A1) and aliphatic copolyamide A2), wherein the weight ratio of A1) to A2) is 55: 45 to 95: 5, b) 0% to 60% by weight of glass fibers as component B), c) 0% to 2% by weight of nigrosin as component C), d) 0.1% to 10% by weight of at least one polyhydric alcohol comprising more than two hydroxyl groups and a number-average molecular weight (M n) of less than 2000 selected from glycerol, trimethylolpropane, 2,3-di-(2'-hydroxyethyl)cyclohexan-1-ol, hexane-1,2,6-triol, 1,1,1-tris(hydroxymethyl)ethane, 3-(2'-hydroxyethoxy)propane-1,2-diol, 3-(2'-hydroxypropoxy)propane-1,2-diol, 2-(2'-hydroxyethoxy)hexane-1,2-diol, 6-(2'-hydroxypropoxy)hexane-1,2-diol, 1,1,1-tris-[(2'-hydroxyethoxy)methyl]ethane, 1,1,1-tris-[(2'-hydroxypropoxy)methyl]propane, 1,1,1-tris-(4'-hydroxyphenyl)ethane, 1,1,1-tris-(hydroxyphenyl)propane, 1,1,3-tris-(dihydroxy-3-methylphenyl)propane, 1,1,4-tris(dihydroxyphenyl)butane, 1,1,5-tris(hydroxyphenyl)-3-methylpentane, di-trimethylolpropane, trimethylolpropane ethoxylates, trimethylolpropane propoxylates, pentaerythritol, dipentaerythritol, tripentaerythritol, cyclodextrin, D-mannose, glucose, galactose, sucrose, fructose, xylose, arabinose, D-mannitol, D-sorbitol, D- or L-arabitol, xylitol, iditol, talitol, allitol, altritol, guilitol, erythritol, threitol and D-gulono-γ-lactone as component D), e) 0% to 20% by weight of further additives as component E), wherein the reported amounts summing to 100% by weight are based on the total composition, the aliphatic polyamide A1) is selected from PA 4, PA 5, PA 6, PA 7, PA 8, PA 9, PA 10, PA 11, PA 12, PA 46, PA 66, PA 69, PA 610, PA 612, PA 96, PA 99, PA 910, PA 912, PA 1212 and the aliphatic copolyamide A2) is constructed from the monomers of two or three polyamides selected from PA 4, PA 5, PA 6, PA 7, PA 8, PA 9, PA 10, PA 11, PA 12, PA 46, PA 66, PA 69, PA 610, PA 612, PA 96, PA 99, PA 910, PA 912, PA 1212. a) 30% to 99.9% by weight of a polyamide mixture as component A) composed of aliphatic polyamide A1) and aliphatic copolyamide A2), wherein the weight ratio of A1) to A2) is 55: 45 to 95: 5, b) 0% to 60% by weight of glass fibers as component B), c) 0% to 2% by weight of nigrosin as component C), d) 0.1% to 10% by weight of at least one polyhydric alcohol comprising more than two hydroxyl groups and a number-average molecular weight (M n) of less than 2000 selected from glycerol, trimethylolpropane, 2,3-di-(2'-hydroxyethyl)cyclohexan-1-ol, hexane-1,2,6-triol, 1,1,1-tris(hydroxymethyl)ethane, 3-(2'-hydroxyethoxy)propane-1,2-diol, 3-(2'-hydroxypropoxy)propane-1,2-diol, 2-(2'-hydroxyethoxy)hexane-1,2-diol, 6-(2'-hydroxypropoxy)hexane-1,2-diol, 1,1,1-tris-[(2'-hydroxyethoxy)methyl]ethane, 1,1,1-tris-[(2'-hydroxypropoxy)methyl]propane, 1,1,1-tris-(4'-hydroxyphenyl)ethane, 1,1,1-tris-(hydroxyphenyl)propane, 1,1,3-tris-(dihydroxy-3-methylphenyl)propane, 1,1,4-tris(dihydroxyphenyl)butane, 1,1,5-tris(hydroxyphenyl)-3-methylpentane, di-trimethylolpropane, trimethylolpropane ethoxylates, trimethylolpropane propoxylates, pentaerythritol, dipentaerythritol, tripentaerythritol, cyclodextrin, D-mannose, glucose, galactose, sucrose, fructose, xylose, arabinose, D-mannitol, D-sorbitol, D- or L-arabitol, xylitol, iditol, talitol, allitol, altritol, guilitol, erythritol, threitol and D-gulono-γ-lactone as component D), e) 0% to 20% by weight of further additives as component E),