Which cleaning product should never be used on metal tools?

Acidic cleaners should never be used on metal tools because they can cause corrosion and deterioration of the metal. Metal tools are typically made from materials like stainless steel, which can withstand a variety of cleaning agents; however, acidic cleaners can react with the metal surface, leading to rust, pitting, and ultimately reducing the tool's lifespan and effectiveness.

Using soap and water is generally safe and effective for cleaning metal tools, and alcohol-based cleaners can also be used for disinfecting without harming the metal. Disinfecting wipes are often designed to be non-corrosive and suitable for use on metal surfaces. Therefore, the choice of using acidic cleaners is not advisable when it comes to the maintenance and preservation of metal tools in a barbershop setting.