Why should metallic dyes be avoided?

• A. They may interact with other cosmetics in unexpected ways
• B. They can cause staining on the skin and scalp
• C. They require no special handling
• D. They can cause unpredictable results or reactions with other chemicals

Answer: (D)

Metallic dyes contain metal salts that can react with oxidizing agents and other chemicals used in barbering services. This interaction can lead to unpredictable color changes, unwanted metal deposits on the hair, or damage to the hair and scalp. Because reliable results depend on controlled chemical reactions, introducing metallic dyes increases the risk of unpredictable outcomes when other products are used. While staining can occur, the main concern is these potential reactions with other chemicals.