Here's the breakdown:
* Developer is a chemical that helps the color molecules in hair dye penetrate your hair shaft.
* Volume refers to the strength of the developer. A higher volume developer lifts hair color more dramatically.
* 30 volume developer is considered a medium-strength developer. It's often used to:
* Lighten hair by 1-2 levels
* Cover gray hair
* Achieve vibrant color
Important considerations:
* Never use developer alone! It's always mixed with a hair dye or toner.
* Always follow the instructions on the product you're using.
* 30 volume developer is not suitable for bleaching hair. For significant lightening, you'll need a stronger developer (e.g., 40 volume or higher).
* Using developer on hair can be damaging. Always do a strand test before applying it to your whole head.
If you're unsure about how to use developer, it's best to consult a professional hairstylist. They can help you choose the right products and techniques to achieve your desired results.