Cosmetic and household care composition

A procedure for preparing a conditioner and rheology modifier comprising:

• i) from 60 to 90% by weight of a cationic galactomannan or a cationic xyloglucan, having a cationic degree of substitution of from about 0.01 to about 3;
• ii) from 1% to 10% by weight of (2,3-dihydroxypropyl)trimethyl ammonium chloride;
• and
• iii) less than 0.15% by weight of (3-chloro-2-hydroxypropyl)trimethyl ammonium chloride;
• comprising:
• a) reacting 100 parts by weight of galactomannan or xyloglucan with from 1 to 600 parts by weight of (3-chloro-2-hydroxypropyl)trimethyl ammonium chloride or of (3-epoxypropyl)trimethyl ammonium chloride with from 0.4 to 200 parts by weight of sodium hydroxide (or an equivalent amount of another alkaline hydroxide) in from 5 to 500 parts of water or of a water/alcohol mixture containing from 20 to less than 100% by weight of water;
• b) adding from 0.1 to 400 parts by weight of sodium hydroxide (or an equivalent amount of another alkaline hydroxide) to a mixture obtained from step a) and stirring for from 10 to 300 minutes, at a temperature of from 30° C. to 90° C.;
• and
• c) with no purification by washing with water or solvents, drying and milling a mixture obtained from step b);
• wherein the cationic galactomannan or cationic xyloglucan has a cationic degree of substitution of from about 0.05 to about 0.7 and the conditioner and rheology modifier has a residual concentration of (2,3-epoxypropyl)trimethyl ammonium chloride of less than 0.15% by weight.