Wella Blondor Multi Blonde Powder Lightener, 28.2 ... - Amazon.com

Step 4: A high quality bleach it’s important, i use this Wella Blondor with wella 20 vol peroxide. Peroxide comes it different strengths but i prefer 20, it’s more gentle. I leave it for about 45 min-1 hour, i check every 5 minutes on my hair condition as well.