Schwarzkopf Igora ColorWorx White Direct Dye 3.4 oz
Back to Basics: Artificial Color Pigments
All semi-permanent hair colors contain developed pigments. Demi-permanent colors contain a mix of developed pigments and un-developed color precursors (small-uncolored molecules that penetrate deep into the hair before merging into big color molecules, also known as polymerization).
Note that a permanent color has a high percentage of color precursor for longer retention of color in hair.
Categories: Hair Care, Hair Color
What are the Characteristics of Semi-Permanent Products Containing Direct Dye Pigments?
- They are ready for use and do not need oxidation or developer lotion
- The coloring process does not affect the structure of the hair
- The color fades gradually – no need for retouching unless this is desired
- The product can be pH-neutral to weak acid and therefore will not damage the hair
- The natural pigments already present in the hair will influence the final shade
What are the Characteristics of Permanent-Color Products Containing Color Precursors?
- They need oxidation or developer lotion
- Development time is needed
- Before oxidation color precursors are colorless, dissolved salt crystals
- They use oxygen provided by developer lotion to form yellow, red or blue pigments
- Polymerization makes them develop into bigger particles inside the cortex of the hair
- This delivers great durability because the precursors grow into the pigment and settle themselves inside the hair structure
- These new developed artificial pigments are combined in different quantities making a huge range of potential target colors possible
- They are not transparent and have the ability to cover natural white hair