We don’t use any toxic sealants for our Silipint cups so sometimes (though rarely) the silicone can stain with certain drinks, such as coffee or red wine. The best way to avoid this is to choose a cup color that won't stain with your drink. You can also reduce staining by immediately cleaning you cup after use. If you have a stain that seems to have set in we recommend soaking your cup in 3% Hydrogen Peroxide for 24 hours.
If these tricks don’t work and you're unhappy with a staining situation, we will replace your product. Check out our Returns and Lifetime Guarantee policy and email us at info@silipint.com or call us at 866-935-4831.
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