How do you use redken coverfusion?

To use Redken Cover Fusion, start by mixing the desired shade with the appropriate developer, typically a 20-volume for optimal gray coverage. Apply the mixture evenly to dry, unwashed hair, ensuring full saturation, and process for 35 minutes. Rinse thoroughly and follow with a suitable Redken conditioner to maintain hair health and color vibrancy. Always perform a patch test before application to check for any allergic reactions.