When it comes to coloring your hair extensions, there are various methods and tools you can use. Depending on the permanence of the look you want, the shade you’re trying to accomplish, or the shade of your natural hair, different color products and combinations will bring about different results. Within the varying subcategories of custom coloring, we occasionally get asked about using toner on hair extensions. It’s a good question. Toner—occasionally called gloss—is a semi-permanent color. Unlike semi-permanent color that...