Fabrics can be affected by acids or alkalis. A common strong acid to be aware of is battery acid. Damage can also be caused by chloride salts which are found in many beverages, foods, and perspiration. Silks seems to be the most affected by acids and alkalis.

There exist “invisible stains” known as tannin stains. Most often, these stains remain invisible until heat or age turns it yellow or off-white. Usually this happens while the garment has been hanging in a closet or during the heat of dry cleaning and pressing. Soft drink, liquor, and fruit juices are the most common items containing tannin.

Do you have any question about dyes and fabrics?

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