Car dry-bright composition

An aqueous car dry-bright composition comprising:

• a concentrate consisting essentially of:
• (a) from 1 to 30% by weight of quaternary ammonium compounds of the formula ##STR8## in which R.sup.1 is independently at each occurrence C.sub.6 -C.sub.22 -alkyl or C.sub.6 -C.sub.22 -alkenyl,
• m and n independently of one another are a number from 1 to 6,
• R.sup.2 is C.sub.1 -C.sub.4 -alkyl,
• R.sup.4 is hydrogen or C.sub.1 -C.sub.4 -alkyl,
• R.sup.5 is hydrogen or a group of the formula C(O)R.sup.1,
• R.sup.3 is C.sub.1 -C.sub.4 alkyl or a group of the formula ##STR9## in which R.sup.4 and R.sup.5 are as defined above and p is a number from 1 to 6,
• and
• A.crclbar. is an anion,
• (b) from 2 to 10% by weight of a C.sub.8 -C.sub.22 -alkylamino-(C.sub.1 -C.sub.4)-alkoxylate, a C.sub.8 -C.sub.22 -alkylalkylene diamine, or a mixture thereof, and
• (c) the butyl ether of ethylene glycol or propylene glycol;
• said composition further comprising from 150 to 500 times the quantity of water, based on the weight of said concentrate.