During the fast wash cycle, difficult stains cannot be washed.

Also, with a shortened wash, the water heats up faster, so washing at 30 or 40 degrees is usually available in this mode.

At such a low temperature, the fabric is subject to less damage, but it will not be possible to destroy dust mites and bacteria.

If you often wash things at an accelerated rate, an unpleasant odor will emanate from the machine, thanks to bacteria this happens; they accumulate in the drum, on the rubber seals. To avoid this, you need to wash things at high temperatures.