How- to Series: To prevent a metal zipper from changing color

October 28, 2019
During the leather tanning process, tanning agents such as sulfuric acid, mineral acids, chrome compounds, tannic acid and aldehyde compounds are commonly used.  When those tanning chemicals that are used on leather products come into contact with a metal zipper, the metal teeth may change color. Learn how to prevent a metal zipper from changing color in these 3 easy steps.
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