Hydrofluoric brighteners are very straight forward. Simply find the right dilution and be careful not to get the product on anything you don’t want etched. HF will corrode whatever it touches; on humans, it burns to the bone and can cause death. We don’t like to recommend these products but since they are part of the industry, we do have two of them. Brite 10
is designed to attempt to balance the aggressiveness of HF with the safety we have achieved in our other products. It is fairly forgiving on glass if you do not let it dry on the surface. It can quickly bloom and brighten aluminum. It also tends not to oxidize as readily due to the phosphoric present in the formula. Alumix is extremely aggressive.