Stunning Double Process Blondes In this book, Volume-7 in the "Trade Secrets of a Haircolor Expert" educational series you will discover all the information needed to gain the knowledge and confidence to become competent in Double Process Blonding. You will learn complete step-by-step instructions on everything you need to know about Double Process Blonding. We will discuss application techniques, product choices, timing and, of course, troubleshooting...