The biggest and most important, crucial item when going for that beautiful caramel tone is to AVOID going too red or too brassy when lifting from darker hair. Here's how:
To achieve a perfect, true caramel, process and rinse base color FIRST. Base color formula: 1 oz. 6N Aloxxi Andiamo mixed with 1 oz. Aloxxi 20 volume developer. Process only fifteen minutes.