Yes, combining ''equal parts'' of 30 V. and 10 V. developers will make 20 V. developer.
you can't mix developer with developer to make another developer
Equal parts of 5 volume developer + 15 volume will yield approximately 10 volume.
Good idea, but unfortunately that won't work. There's no way to make a 40 volume, you will need to buy that separately.
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
Mixing equal parts of 40 volume and 10 volume developers will result in 30 volume.
you can't mix developer with developer to make another developer
Equal parts of 5 volume developer + 15 volume will yield approximately 10 volume.
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.
NO. If you mix them in equal parts, that would give you 35 volume. To get 15 volume, mix equal parts of 10 and 20 volume.
Equal parts of 10 & 30 V. developer will yield 20 v.
Yes, if mixed equally, a 10V + 30V= 20 Volume developer.
Good idea, but unfortunately that won't work. There's no way to make a 40 volume, you will need to buy that separately.
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
Mixing equal parts of 40 volume and 10 volume developers will result in 30 volume.
Yes, using less developer and more bleach will help the bleach to process more quickly. They always say, "Thicker is Quicker" but it you need more lift, use a higher volume.
30 or 40 depending how bright you want it
you cannot. just use the 30 on its own.