Color pigments aren't dirt. This is a molecular interaction within the fabric itself in which, even while stools are washed away and no longer there, some color pigment (chromophores) remains on the fabric. One wouldn't look at a mustard stain on their pants and say “my pants are still dirty!”.
Yes, you should be able to. Soak the item of clothing in warm water, then apply a few drops of dish soap on the stain. Hold the material around the stain and start rubbing the sides against each other to work up a lather. This will help the fabric absorb the soap.
Detergent is supposed to help remove stains, but sometimes it leaves a mark (or two) of its own. If a washing machine is overloaded or detergent is not properly loaded, it won't properly dissolve in water – meaning it ends up on your clothes instead.
Almost all stains can be removed if treated quickly enough. However, most stains will become permanent if left untreated too long. When first coming into contact with fabric, most stains will initially remain on the surface and can be removed relatively easily.
If you find a stain on an item that has been through a hot dryer, it doesn't have to be permanent. By using the right laundry products and the right technique, stains that have been dried do come out.
The short answer is unfortunately no, not all stains can be removed, and here are three reasons why. The longer a stain is left untreated, the less likely it is to be removed.
Many, probably most, store-bought stains are made with both dye and pigment. If wood stained with these stains is exposed to sunlight or fluorescent light for a while, the dye color will fade away, but the pigment color will remain.
One aspect of sorting that's important to consider is stain removal. Clothes that aren't especially soiled are one thing, but clothes with tough or excessive stains may not come clean if they aren't treated before washing.
To get the best results, wash heavily stained items separately. This means really dirty work clothes or muddy children's play clothes should not be washed with less-soiled clothing.
Protein stains such as dairy, blood, egg, glue, and white deodorant marks should always be washed in cold water. Hot water can actually cook the protein, causing it to absorb into the clothing fibres, and making it almost impossible to remove. Cold water helps lift the stain without setting it.
Can washing machines remove tough stains? Yes, they can. As well as anti-stain cycles, some machines might also come with such as intensive wash, or pre-wash programmes to help shift stubborn stains.
Typically, cold water works great on blood, as well as food, beverages and water-based paint, while hot water works best on protein-based stains. Unfortunately, there's no golden rule to stain removal. For example, most food stains should be soaked in cold water, unless it's egg, mustard or a tomato-based product.
Even notoriously difficult stains like red wine or ink can be removed from most fabrics. For all fabric stains, it's important to act fast and treat the spot as soon as possible. It's also generally best to blot the stain rather than rub it.
Detergents and other cleaning products contain surfactants, which are molecules that improve the mixing between water and other substances, such as oil or grease. The surfactant allows water to penetrate into a stain and lift the dirt particles off the fabric; the rinse then sweeps the dirt away.
Mix 1/2 cup hydrogen peroxide with two cups cool water. “It will solve almost all tough stains,” says Leverette, who advises against using acidic cleaners like vinegar or lemon juice, which can etch the stone.
Hot water can set some stains into fabric but can dissolve others depending on the composition of the stain. One example of a stain that requires cold water is a blood stain.
Certain types of fibers, such as wool, cotton, silk, and some nylons are particularly susceptible to permanent staining from coffee, tea, wine, etc. Be aware of hot liquids, especially. Of course, bleach and household chemicals (see below) can cause permanent staining as well.
Permanent or stubborn stains are typically caused by spillages that are not removed quickly after they occurred. The key to handle such challenging spots is to remove the stains immediately after you discover it.
Oil-based stain can be kept for 1 year if the cans have been opened, but unopened cans will last 2 - 3 yrs. Water-based stain will last 1 year, if opened, and 2 years, if unopened. Oil-based varnishes will be good for 1 year, opened or unopened.
Cold water is fine for most clothes and other items that you can safely put in the washing machine. It can remove many stains from clothing, including grass on your kid's jeans or makeup smudges on a sweater. Delicate fabrics (lace and silk) and dark, colorful fabrics actually do best in cold water.
More agitation (e.g. cotton cycles) = better cleaning and stain removal, but less fabric care. Less agitation (e.g. delicates) = better fabric care, but less cleaning and stain removal power.
When your washing machine isn't cleaning clothes, the most common reason is that it isn't draining properly, leaving dirt from the first wash in the drum so it's still there after the last rinse. This means you need to clear your washing machine's filter.