So, how long should you let hair color sit? The answer is, it depends on the type of hair color, your hair type, and the desired results. For example, if you're using a semi-permanent hair color, you may need to leave it on for a shorter time, usually around 20-30 minutes, while a permanent hair color may require a longer processing time, typically 35-45 minutes.
Just like how you need to adjust the cooking time for different types of ingredients, you need to adjust the processing time for your hair color based on your hair's porosity and condition. If you have virgin hair, it may require a shorter processing time, while previously colored hair may need a longer time to achieve the desired results.
It's also important to consider the developer used in the hair color, as it can affect the processing time. A higher volume developer can process the hair color faster, while a lower volume developer may require a longer processing time. It's like using a different type of oven - you need to adjust the cooking time accordingly to get the best results.
How Long Should Hair Color Sit For Perfect Results? | ShunSalon
