Marcus Byerly (@MarcusByerly) is the master of silver hair. When natural level 7 Whitney returned for a touch-up, he was inspired by the film "The Devil Wears Prada" to create a glam finish. Here he offers the HOW TO for the retouch and refresh:

Step 1. Apply Redken Flashlift and 30 volume developer to the regrowth.

Step 2: Process for 30 minutes at room temperature.

Step 3: Tone with Redken Shades EQ 09T and equal parts processing lotion.

Step 4: Process for 20 minutes maximum. Shampoo and condition.