Ordinary white vinegar is good for a lot of things, but it's too dilute to use as a fabric softener or limescale prevention.
I've used acetic acid (32%) for decades, 30ml or so per wash. It's even listed right on the bottle that it works as a fabric softener, keeps colors from fading and prevents limescale buildup.
And it goes in the fabric softener compartment of course, if you mix it with the detergent the acidity will reduce its washing power(detergent is alkaline).
Det gør vi også, for 25-35kr er vanvittigt at betale for smør. Og det er hyggeligt at hive en "God Jul"-Lurpak frem i april.
Men jeg er også doven og gider ikke nødvendigvis hente en pakke i fryseren når jeg allerede er godt i gang :-)