So, what's actually happening when you leave hair dye in your hair? Well, the dye is penetrating the hair shaft, and the color molecules are binding to the hair cortex. It's like a little party in there, with the color molecules dancing and mingling with the hair. But, if you leave the dye on for too long, the party can get a bit wild, and your hair can end up over-processed.
The processing time can vary depending on the type of dye, the length and thickness of your hair, and even the temperature of the room. It's like baking a cake - you need to follow the recipe, but you also need to consider the variables. And, just like how a good baker needs to keep an eye on the clock, you need to keep an eye on the time when you're dyeing your hair.
