Can colloidal silver or colloidal gold cause an allergic reaction?

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• 1 Gallon Pump Dispenser

  

  1 Gallon Pump Dispenser

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• 2 Oz. Bottle

  

  2 Oz. Bottle

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• 8 oz Glass Bottle

  

  8 oz Glass Bottle

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• 8 oz. Plastic Bottle

  

  8 oz. Plastic Bottle

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