Always lovely to know !
Developer or H2O2, hydrogen peroxide is the white creamy liquid which is necessary in order for the hair coloring process to take place. Without it there would be absolutely NO lightening happening. It is THAT important, yet when I speak to people even many of you stylists you are afraid of the topic. There really is no need to be afraid of Developer. It is merely 1 molecule away from water! We all know how harmless and how good for us WATER is ??!!
Hydrogen peroxide IS Developer. 2 words for the same thing!
Our bodies even produce hydrogen peroxide!
Hydrogen peroxide, the same mild acid that many people use to disinfectant their kitchens or treat cuts and abrasions, is also produced by the body to keep cells healthy. Now, researchers have solved how part of this complex process works.
"It's an ideal messenger compound, because it's small, fast, and doesn't linger," says chemist Alex Deiters. "It works by oxidizing, or modifying, certain amino acids in proteins, which affects the protein's function."
For example, when the immune system is activated in response to bacteria, large amounts of hydrogen peroxide are produced by certain cells to fight the infection. Lowther and colleagues studied how a molecule known as peroxiredoxin (Prx) helps control levels of the agent. The role of Prx is important because if the levels of hydrogen peroxide become too high, the cell's DNA and other proteins can be damaged. Scientists suspect that this and similar processes are what leads to cancer, diabetes and other disease.
Prx actually has a dual role in the process. Its usual job is removing excess hydrogen peroxide from the cells by converting it to water. But if levels get dangerously high -- and Prx needs help -- it becomes inactive in its "converting" job and instead becomes a "signaler," telling the cell to produce or activate other proteins to help remove the excess.
"It basically acts as a sensor and warns the cell that levels are too high and that the cell needs to respond," said Thomas J. Jönsson, Ph.D., lead author, and a post-doctoral fellow at Wake Forest. "Once that threat is gone, Prx needs to go back to its normal state."
I want everyone to understand Developer so you are not afraid of it, once that happens you will welcome the use of it and all the wonderful things it does. If our bodies did not make hydrogen peroxide we would not be alive.....so welcome it and welcome what it
I also want you to know before I learned all of this I felt the exact same way, I don't know if its the name, or what....? But just the name peroxide used to conjure up horrific things in my mind. I have NO idea where it came from either..... so I am just trying to speed up the process for all of you to accept and love the wonderful little miracle called Developer!
Now, to answer your question on thick or thin..... that does not have anything to do with how it works.
What it does affect is personal preference.
Some people like the mixture to be runny, some like it to be thick. But what you will find being as I have worked with over 40 lines of color in my days is this...........
If the color in the tube (no matter "what brand") is on the thicker side, then their developer will be runny.
Such as Wella's, Schwarzkopf's, Kenra, the most runny is our Violet colored developer. I actually feel it is SO runny I mix it with LANZA which is the thickest to include in our OIL BLEACH KITS, which I am just so proud of. These kits really do wonders for the hair if you are blond!
So your question as to runny or thick? That really is a personal preference. Colorists who do a lot of foil work do not like runny, because runny means the liquid will expand as it develops and then pop out of the foil leaving what we used to call "bunny trails" on the hair (or spots!) I'm sure everyone has either had them or seen them, they come from runny developer.
The advantage to thick developer, like LANZA, which is clumpy almost....is, it has the "good alcohols" in it. Those good alcohols have one chance to get inside that hair strand and that is when the strand is open and hair color goes in, so that is the advantage of that particular developer over a thinner one.
For me, I love Schwarzkopf's blond developer it is medium thickness and has an oily quality to it so it is very smooth to work with. But again ...........it depends on what you are mixing it with and if you are doing a root touch-up or foil work! To me the thickness of the hair shouldn't matter.