Cleaning Amrit Copper Bottles is our USP because by introducing authentic designer Amrit Copper Bottles we have solved the Patina (blackening) problem on the outside, your Copper Bottles will look classy always, however, on inside the Copper gets oxidized and will turn black or green. We call them Antique Designs.
This is actually a true identification of Pure copper that it will turn black or green, depending on the environment and that is absolutely Normal and Natural. The best way to clean it naturally and to clean tarnish on the inside of a copper bottle or other copper vessel, you can create this mixture in these quantities. 1 lemon or 1tbsp Vinegar, 1 tablespoon of salt, and ½ cup of water. Pour the mixture in the vessel, close the lid, and shake vigorously. Pour the mixture out and rinse the vessel with water. Finally, dry it if you are not going to store water in it.
If you have bought the Raw Look Diamond design of Amrit, it will require cleaning from outside too, using the above mixture. Just wipe the surface with Lemon/ Vinegar + Salt, the blackening will go away aware and luster will be restored. You can also use a lemon-based liquid soap, for cleaning if you do not have Vinegar. One more amazing option to make your Raw Look Copper Bottle Shine again from the Outside is Pitambari Powder. It works on another type of metals like Brass, Copper, Steel, etc.
In the case of Antique Pine/ Brick Design please do not use any dishwasher or scrub, just wipe the surface with a wet cloth.
WHY DOES COPPER TURN BLACK?
The reason for sudden color change in a copper utensil or a pot is because copper does not react with water but it does react with atmospheric oxygen to form a layer of brown-black copper oxide which, unlike the rust that forms on iron in moist air, protects the underlying metal from further corrosion. Your Amrit Copper Bottle will shine again. Please note that the blackening does not impact the Olygodynamic properties of Copper, which simply means it will still be equally healthy as it was the first day you bought it, even with the black layer.