Avoiding Bleach When Removing Collar Stains
Bleach is one of the worst items you could use when you are removing collar stains even if the fabric is white. The chlorine contained in household bleach creates a reaction to the proteins contained in the perspiration and will then darken the stain.
This is what creates the dark yellow color in the stains around the collar.
Many household liquid detergents are specially designed to tackle difficult protein stains. This means they are perfect for removing collar stains which are caused by perspiration.
If you are using household laundry detergent, you should try and use ones whose labels state that they have concentrating or oxygenated powers meant for protein-based stains such as grass stains and food.
Should the liquid laundry detergent fail to remove collar stain rings from your dress shirts, then you can create a combination treatment. You begin by dampening the affected area again with detergent.
Then set the items in the sun. The garment should be kept damp using cold water. Leave the item in the sun all day, then wash it as usual, and let it air dry.
If you still need to remove collar stain rings from your dress shirts, you can use hydrogen peroxide on your white fabrics. It reacts with the same proteins from perspiration and instead of creating another chemical reaction, it breaks apart the proteins.
However, you should bear in mind that hydrogen peroxide contains whitening properties like chlorine bleach so it should be used with caution if you are trying to remove collar stain rings from your colored dress shirts.
It is most important that you remove collar stain rings from your dress shirts as soon as possible. If the stains continue through many wash cycles before they are removed, then they become decidedly more difficult to remove, especially if they fail to undergo any pre-treatment.