This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Both metal and copper oxidize when exposed to oxygen and this is a natural process. Copper that is exposed to the outside environment is more likely to turn green and that is why copper vases and decorative pieces in gardens are often green.
It will leave a beautiful high polished finish as well as protect your jewelry from your body oils and prevent oxidation. The lack of oxidation will prevent your skin from turning green. The key is to keep your copper clean, wax coated or not. Dirty copper means eventually your skin may turn green.t's known as the oxidation reaction. The copper reacts with oxygen in the air, your sweat and skin oils creating a green layer of copper carbonate on your skin. Relax; it shouldn't be anything to be concerned about, it just looks terrible.