The difference is the strength of the developers.
A 30% developer will help you achieve a minimal lift and a 40% will make the color brighter/louder which will result in a maximum lift.
In other words a 30 would lift your hair 3 times and a 40 will lift it 4X times the color. When coloring your hair like this it goes through stages of lightening that's why stylist put it on & check back to see if the color has made it to the desired color that you want or they want to achieve for you.
creme developer is thicker and more conditioning Also.......Clear developer is mainly used when coloring out of a bottle and cream is used when coloring with a bowl & brush.
30 Volume Cream Developer is generally used for high-lift color, blonding, and bleaching.
If mixed equally, you will get 30 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.
2.6 oz of developer.
Mix with 20 or 30 Volume Cream.
30 vol is stronger
Equal parts of 10 & 30 V. developer will yield 20 v.
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
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.
A color developer, whether it's cream or clear, acts as an activator with color, which is mixed together. It opens the cuticle of the hair shaft so that the color can be deposited. It will lift your natural color up a shade or two depending on the volume of the developer used.
no, manufacturers instrustions tells you not to