Using which type of haircolor should be avoided with professional chemicals?

Metallic dyes should be avoided when using professional haircoloring chemicals due to their potential to cause adverse chemical reactions. These dyes contain metallic salts that can interact with other chemical products. When combined with professional products, they can lead to unwanted results such as unexpected color changes or hair damage, including breakage or uneven color application. Additionally, the metallic salts can create a buildup on the hair, which hinders the penetration of subsequent haircolor products, further complicating the coloring process. Therefore, it’s crucial to avoid using metallic dyes in conjunction with professional haircoloring systems to ensure a safe and effective outcome.