30 Volume Cream Developer is generally used for high-lift color, blonding, and bleaching.
Mixing equal parts of 15 volume and 20 volume cream developer will not create a developer that is equivalent to 30-35 volume. Instead, the resulting mixture will have a volume that is closer to the average of the two, which would be around 17.5 volume. To achieve a true 30-35 volume developer, you would need to use a developer that is specifically formulated to that strength.
30 vol is stronger
It won't make it 30. The way developer works is 10 is no lift deposit only and makes hair semi permanent. 20 is 7-10 shades of lift with deposit and makes hair colour permanent. You have to buy 30 volume developer from a sallys beauty supply but 30 is very dangerous for the hair it can damage it severly I recommend sticking to just 20 volume
Equal parts of 10 & 30 V. developer will yield 20 v.
Mixing 10 volume cream developer with 40 volume cream developer could result in an unpredictable reaction, potentially altering the intended chemical properties of the developer. This could affect the color result and the effectiveness of the hair color product. It is best to use the developer recommended by the hair color product manufacturer for optimal results.
no, manufacturers instrustions tells you not to
Equal parts of 10 & 30 V. developer will yield 20 v.
Which developer you use will depend on the color you want to achieve. A 20 developer will give you a darker color than a 30 or 40 developer.
Mixing 10 Volume developer and 40 volume developer will never make a 20 volume regardless of how much is mixed. In order to make a 20 volume, equal parts of 10 and 30 volumes will need to be mixed. Mixing 10 and 40 will make 30 volume.
To create a 30 volume developer solution with a 40 and 30 volume developer, you can mix equal parts of each developer together. For example, mix 1 part 40 volume developer with 1 part 30 volume developer. This will result in a 35 volume developer solution, which is close to 30 volume. It is important to perform a strand test before using the mixed developer on your hair to ensure it is the desired strength.
30
To achieve a 30 volume developer solution, you can mix equal parts of a 20 volume developer and a 40 volume developer. This will result in a 30 volume developer solution.