Surface treatment compositions including poly(diallyldimethylammonium chloride) and sheilding salts

A surface treatment composition comprising:

• a) from about 6% to about 20% by weight of the composition of poly(diallyldimethylammonium chloride) having a molecular weight of less than about 100,000 Daltons,
• b) from about 6% to about 40% by weight of the composition of anionic surfactant;
• c) from about 5% to about 30% by weight of the composition of Hydrophobic Association Disruptor;
• and
• c) from about 4% to about 15%, by weight of the composition, of a shielding salt, wherein the shielding salt:
• has a molecular weight of from about 25 to about 500 and
• is incapable of lowering the surface tension of water below 50 mN/m when added to water at concentrations of up to 0.01M;
• wherein the weight ratio of anionic surfactant to cationic polymer is between about 0.5:1 and about 4:1, and
• wherein the weight ratio of shielding salt to cationic polymer is from about 0.3:1 to about 3:1.