Here's why:
* Different Formulations: Goldwell Colorance and Redken Shades EQ are developed with specific formulations designed to work optimally with their respective developers.
* Incompatible Chemistry: Using different developers can lead to unpredictable results, including:
* Incorrect color deposit.
* Uneven color.
* Damage to the hair.
* The mixture may not activate or process correctly.
* Manufacturer Recommendations: Both Goldwell and Redken strongly recommend using only their specifically designed developers for their respective color lines.
Always use the corresponding developer recommended by the color manufacturer. Using the wrong developer will invalidate any warranties and potentially harm the hair. Use Goldwell Colorance developer with Goldwell Colorance Clear. Use Redken Shades EQ Processing Solution with Redken Shades EQ glosses.
In short, stick to the recommended product pairings to achieve the best and safest results.