* Volume and Lift: The volume of a developer refers to the strength of the hydrogen peroxide it contains. 30 volume developer has a higher percentage of hydrogen peroxide than lower volume developers (like 10 or 20 volume). This stronger concentration helps to lift the natural pigment in your hair more effectively, allowing for a lighter result.
* Level of Lift: 30 volume is typically used to lift hair up to 2-3 levels of color. This means that you can lighten your hair significantly with it, but not as much as with higher volume developers.
* Considerations: Using a 30 volume developer requires caution as it can potentially damage hair, especially if used improperly. It's best to consult with a professional hair stylist for guidance and proper application techniques.
Here's a general guideline for developer volumes and hair lifting:
* 10 volume: For toning or depositing color, minimal lift.
* 20 volume: For subtle lightening (1-2 levels), often used for gray coverage.
* 30 volume: For significant lightening (2-3 levels), good for most blonding techniques.
* 40 volume: For maximum lift (3-4 levels), used for extreme blonding or highlighting.
Remember: Always choose the appropriate developer volume based on your desired results and your hair's condition. If you have doubts, seek professional advice.