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Cranberries contain tannin
Tannin solutions are acids responsible for the color and some flavor in tea.
Tanning oils are not bad for your skin, but are used for the wrong reasons sometimes. Tannin oil will not protect your skin in the sun and this can cause skin cancer in the future.
Tannin in coffee contains approximately 90,000 ppm. Tannin is also found in other products including red wines and apple cider.
Foods that contain tannin include red wine, apple juice, apple cider, pears and red-skinned apples. Some people are sensitive to tannin and it can trigger migraines.
Tannin is a boy's name. Other names similar to Tannin would be Tannon, Tannen, Tannan and Tynnin. Tannis and Tannie also sounds very cute as a baby name.
You probably mean Tannin. And there is normally no tannin in deep wells. Only in shallow wells.