Our personal favorite. When you want the really black oxidation this is the product to use.
Provides and attractive flat, velvety black finish on silver. By using a mild steel applicator, Black Max provides a soft grey finish on gold.CAUTION: Contains tellurium compounds and hydrochloric acid. Avoid contact with skin and eyes. Do not inhale. For professional use only. Keep out of reach of children. Please read MSDS.FIRST AID:EYE CONTACT: Flush eyes with water for 15 minutes, holding eyelids open.SKIN CONTACT: Wash area thoroughly with soap and water.INHALATION: Remove victim to fresh air until breathing is restored.INGESTION: Do not induce vomiting. Do not give emetics. Seek medical attention.