It's not just outerwear that loses its appeal due to greasy marks.
This stain also appears on a white shirt over time. There are several tricks that will help return the clothes to their original snow-white color.
A drugstore product, boric (orthoboric) acid, will help whiten the item. First, you need to prepare a working solution: 2 tbsp. boric acid per 4 liters of hot water.
The shirt is soaked in the resulting liquid. After 2-3 hours, the item is rinsed and then washed in the machine.
For colored fabrics, use glycerin and citric acid (lemon juice).
First apply glycerin to the dirty areas, then rinse in water with citric acid. Then wash as usual.
There are three basic steps that will help keep your shirt collar clean longer:
If the collar or cuffs are still dirty, one of the folk remedies, regular washing, or a combination of these methods will help.