Things to consider when leaving Redken gels on grey regrowth:
* Specific Product Instructions: Always, always, always follow the instructions on the product packaging. Different Redken gels have different processing times and instructions.
* Porosity of Grey Hair: Grey hair is often more resistant and less porous than pigmented hair. It can be difficult for color to "grab" onto grey hair.
* Desired Coverage: If you want complete, opaque coverage of the grey, you might need a longer processing time. If you're aiming for a more subtle blend, you might not.
* Underlying Tone of the Hair: Existing hair color and underlying tones can affect the result of the color.
* Strength of Developer: A stronger developer opens the hair cuticle more effectively, allowing the gel to penetrate the grey hair more efficiently, but it can also cause damage if left on too long. Always use the developer recommended by Redken for the specific gel product.
* Individual Hair Condition: Damaged or chemically treated hair may process color faster than healthy hair.
* Test Strand: Always perform a strand test before applying color to the entire head, especially when dealing with grey hair or changing a formula. This helps you determine the correct processing time and ensure you'll achieve the desired result.
Common Scenarios and Recommendations:
* Grey Coverage is the Goal: If you're using a Redken gel specifically formulated for grey coverage and want maximum coverage, you might need to add a few minutes to the recommended processing time, but only if the strand test indicates it's safe and effective. Start with a small increment of time (e.g., 5-10 minutes) and monitor the hair closely.
* Blending Grey Hair: If you're using a gel for a subtle blend or to tone the grey rather than completely cover it, you might not need to adjust the processing time at all.
* Gentle Processing: Start with the lowest recommended processing time and increase gradually as needed, based on your strand test and the condition of the hair.
Potential Risks of Over-Processing:
* Damage: Over-processing can dry out the hair, leading to breakage, split ends, and a dull appearance.
* Unwanted Color Results: Leaving color on too long can result in a color that's too dark, too ashy, or otherwise different from what you intended.
When to Consult a Professional:
Dealing with grey hair and color can be tricky. If you're unsure about how to proceed, it's always best to consult a professional hair stylist. They can assess your hair's condition, recommend the appropriate products and processing times, and help you achieve the desired results without damaging your hair.
In summary, while you *might* need to leave Redken gels on grey regrowth a bit longer for optimal coverage, it's crucial to proceed with caution, perform a strand test, and consult a professional if you're uncertain. Always prioritize the health and integrity of your hair.