In general it's best to wash your dark colours separately. But it's worth knowing if clothes (especially new ones) are colourfast before putting them in with a regular wash. That way you'll avoid dyes running into other clothes, leaving them an undesirable shade! So check the care label, and do this easy test for colourfastness.
For soaking or washing
1. Dampen a small area of hem or inside seam with water.
2. Iron a piece of white fabric or kitchen paper on to it.
3. If the paper soaks up any colour, your garment isn't colourfast, so should be washed separately.
If a non-colourfast item accidentally slips into your wash, a reversal product could come to the rescue. These should be available in most supermarkets and chemists. If an article washed in your machine has released a lot of dye, put your machine on an empty wash cycle before doing the next load. This will stop the loose dye running into next wash.
Your clothing wash labels will help you to identify which programme is the most suitable to wash your clothes. Starting with the symbol which looks like a wash tub.
This symbol tells us two things:
1. The maximum temperature at which a garment should be washed.
2. The amount of agitation suitable for a given garment.
For a mixed temperature wash load, the lowest temperature should be chosen.
The second piece of information from the wash tub symbol is the amount of agitation suitable for any given garment. This is shown with none, one or two dashes underneath.
For a mixed agitation wash load the lowest agitation should be chosen.
Delicate fabrics may be labelled Hand Wash Only (see Fig.1) or Not Suitable for Machine Wash (see Fig.2).
The drying symbol is a square with various other symbols inside. The most widely used of these refers to tumble drying which is a circle inside the square.
When suitable for tumble drying the symbol may also contain a number of dots indicating the recommended temperature for drying.
The dots in the iron symbol represent the recommended temperature of the iron - the more dots, the hotter.
Chlorine bleach is the strong liquid bleach used to disinfect toilets, sinks, etc. This should not be confused with colour-safe bleach or the safe oxygen bleaches contained in detergents.
The dry cleaning symbol is a circle and shouldn't be confused with tumble drying. The circle usually contains a letter which refers to the solvent suitable for that particular garment.
The letters inside the circle indicate the type of solvent suitable for a garment and are for use by the dry cleaning specialist.