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.
Unfortunately for everyone, some stains are permanent. They simply become part of the fabric. Continued attempts to remove them will cause dye loss or fabric damage, known as chafing or fraying. Many stains are removed by the dry cleaning machine and require no additional effort from the cleaner.
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.
Heat can set stains permanently. Once you toss the item into the dryer, the stain is set for good. If the stain remains after the first wash, pre-treat and wash again before drying to try and remove the stain.
“Use a solution of 50 percent vinegar and 50 percent water on the stain. Apply liberally and then treat with laundry soap and water. “DO NOT put the garment in the dryer until you have seen that the stain is gone,” he warns.
Cocoa is made up of some of the world's toughest stains. It is essentially made from chocolate, which by itself is already a big culprit for dark stains. Apart from this, the drink also proves to be a tough stain to remove because it has the strong combination of proteins, fat, and sugar.
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.
The longer a stain is left untreated, the less likely it is to be removed. When a spill first occurs, it sits on the surface of the fabric, but over time, that spill can start to react with the fabric causing the fabric to actually change colors.
Solution 2: How to remove set in stains with white vinegar!
Yet again white vinegar comes to the rescue when it comes to household chores. Considered to be as effective as oxygen bleach by many, white vinegar is incredibly powerful when it comes to removing stubborn stains.
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.
The Pros of Staining Wood
Unlike painted wood, stained wood will fade over time rather than peeling and, in some cases, you may be able to simply scuff sand the wood before recoating it.
Color pigments aren't dirt.
One wouldn't look at a mustard stain on their pants and say “my pants are still dirty!”. They would say “oh no, my pants are stained!” The mustard is gone, but the discoloration left behind lingers in the fabric.
The takeaway? Wood stain is intended to be wiped off immediately after application. If the wood stain remains on the wood, liquid solvents in the stain will evaporate, leaving sticky pigments behind that will never fully dry. To remove tacky wood stain, firmly scrub the piece with mineral spirits.
Answer and Explanation: If a stain is not left on a smear for enough time, the stain may not fully penetrate the cells on the smear. This will cause the cells to appear lighter than they should if stained properly.
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.
Letting Stains Sit Too Long
It can be tempting to throw the soiled item in your laundry hamper and let it sit until your next laundry day, but the longer a stain sits, the harder it can be to remove completely—especially it the stain is colorful or greasy. So rinse and treat those stains promptly!
Can I stain on top of old stain? Yes! In fact, applying stain over stain is a fairly simple process. It works especially well if you're applying a dark stain over a lighter stain.
Mix 1 tablespoon of liquid laundry detergent with enzymes with 1 cup of water. Add 1/4 teaspoon of white vinegar and stir. Use a Dobie All Purpose Cleaning Pad to apply the detergent-vinegar mixture to your unidentified stain. Blot with the pad until the stain is gone.
Stains are harder to remove after a long period of time because they have “time to set” and cling to fibers; most difficult to remove if petroleum based. It can be done by “pretreating” the stains with a remover that is specifically made to combat that particular type of stain.
Sponge the stained area with a dry-cleaning solvent; let it air-dry. Soak the stain in a solution of one cup of liquid laundry detergent and a few drops of ammonia (Caution: Never mix chlorine bleach and ammonia - the resulting fumes are hazardous) for at least 30 minutes. Launder using liquid laundry detergent.
Yes! Vanish is capable of removing old stains as well as new stains.
Rubbing. Frantically rubbing a stain can make it spread further and also damage the weave of the fabric. Try gently dabbing the stain away first.