Detailed answer

The best way to protect your skin from a rash-causing metal is to prevent direct contact with the metal. Avoid wearing jewelry or any items made of the metal that causes the rash. If you have to wear an item containing the metal, consider creating a barrier between your skin and the metal. This can be done by applying a layer of clear nail polish or by placing a barrier, such as a piece of tape or a thin cloth, between your skin and the metal. It's also important to keep your skin clean and dry, as moisture can worsen the reaction. If you already have a rash from the metal, avoid scratching it as it can lead to further irritation and potential infection. If the rash persists or worsens, it is advisable to consult a dermatologist.