Oxidation: 1.The reaction of dye intermediates found in hair coloring developers with hydrogen peroxide 2. The interaction of hydrogen peroxide on the natural pigment.
Deposit: describes the color product in terms of its ability to add color pigment to the hair. Color added equals DEPOSIT.
Lift: The lightening action of a hair color or lightening product on the hair's natural pigment
Hydrogen Peroxide: An Oxidizing chemical made up of 2 parts hydrogen & 2 parts oxygen (H2O2) used to aid the processing of permanent hair color and lighteners. Also referred to as a developer by Stylists/Colorists; available in liquid or cream.
Now we move to the Hydrogen Peroxide ,the "white creme" in the other bottle! Within the BOXED KITS OF COLOR (I'm on the war path against) there are 2 items enclosed, one is a bottle of color the other a bottle of peroxide.
The percentage of LIFT in any color is directly related to its AMMONIA content. At times you will hear Color lines boasting of "no ammonia" which would only be in color the manufacturer does not 'want' to lift... for exam: in many of the "men's" color lines promising to cover grey and not change anything else. The only disadvantage to ammonia in hair color: if you are allergic to it, which is rare, but does happen, it is necessary for light blonding.
The percentage of dye content in the bottle is also known as pigment weight. The more dye molecules in the bottle, the more depositing capabilities the color has. The action of depositing dye or color molecules into the cortex of the hair shaft is partly triggered by OXIDATION, which is achieved by adding hydrogen peroxide (H2O2) to the color.
The dye molecule in any permanent color is too large to penetrate the cuticle of the hair shaft without first altering its structure with hydrogen peroxide. Since without hydrogen peroxide the dye will only stain the cuticle layer,understanding what happens when you add hydrogen peroxide to color is essential. That is also where the difference between Permanent,Semi-permanent, and Temporary color rests.
After the Hydrogen peroxide is added to the color, it begins to oxidize,or lose an oxygen molecule. This creates heat in and on the hair shaft, which expands the cuticle layer so that the color or dye molecules can penetrate.
Once the hydrogen peroxide is completely oxidized, it turns into water (H2O), and its chemical action stops. The color molecules return to their original structure and become part of the structure of the cortex. The cuticle closes, trapping the dye or color molecules inside. the color process is complete.
Don't let me lose you here, this may seem boring/confusing>or BOTH!! but... it will all make sense and come FULL CIRCLE here real soon, promise.
If it doesn't, then ask me questions LOTS of them, I want you to get it...I truly do, because if you do... then you will have knowledge that some of the top Colorists in the country possess & that is what ROCKS about the INTERNET, that high dollar information like that can be had for FREE ;-)...hee hee hee!
No comments:
Post a Comment