Cellulase fabric-conditioning compositions

A fabric conditioning composition comprising:

• (a) from about 1% to about 80% of fabric softening agents of the formula:
• ##STR26## Q is --O--C(O)-- or --C(O)--O-- or --O--C(O)--O-- or --NR.sup.4 --C(O)-- or --C(O)--NR.sup.4 --;
• R.sup.1 is (CH.sub.2).sub.n --Q--T.sup.2 or T.sup.3 ;
• R.sup.2 is (CH.sub.2).sub.m --Q--T.sup.4 or T.sup.5 or R.sup.3 ;
• R.sup.3 is C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 hydroxyalkyl or H;
• R.sup.4 is H or C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 hydroxyalkyl;
• T.sup.1, T.sup.2, T.sup.3, T.sup.4, T.sup.5 are (the same or different) C.sub.11 -C.sub.22 alkyl or alkenyl;
• n and m are integers from 1 to 4;
• and
• X.sup.- is a softener-compatible anion;
• (b) from about 5 CEVU/gram to about 125 CEVU/gram, by weight of the composition, of a cellulase consisting essentially of a homogeneous endoglucanase component, which is immunoreactive with an antibody raised against a highly purified 43 kD cellulase derived from Humicola insolens, DSM 1800, or which is homologous to said 43 kD endoglucanase;
• and
• (c) from about 10 ppm to about 0.5% of a free radical scavenging antioxidant material selected from the group consisting of ascorbic acid, ascorbic palmitate, propyl gallate, butylated hydroxytoluene, butylated hydroxyanisole, tertiary butylhydroquinone, natural tocopherols, C.sub.8 -C.sub.22 esters of gallic acid, tetrakis(methylene(3,5-di-tert-butyl-4-hydroxyhydrocinnamate))methane, thiodiethylene bis (3,5-di-tert-butyl-4-hydroxyhydrocinnamate), calcium bis(monoethyl(3,5-di-tert-butyl-4-hydroxybenzyl) phosphonate), 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-s-triazine-2,4,6-(1H,3H,5H) trione, 3,5-di-tert-butyl-4-hydroxy-hydrocinnamic acid triester with 1,3,5-tris(2-hydroxyethyl)-S-triazine-2,4,6-(1H,3H,5H)-trione, N,N'-hexamethylene bis(3,5-di-tert-butyl-4-hydroxyhydro-cinnamamide), and mixtures thereof.