Popsugar Beauty Beauty News What Is Double Process? Literally Everything You Could Ever Want to Know About Double Process Hair Dye January 6, 2018 by Alaina Demopoulos First Published: October 5, 2017 View On One Page Photo 16 of 25 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 16 After the dye came another round of blow-drying. By this point, I had been in the chair for around six hours and still had one more round of white to go. Previous Next Start Slideshow Beauty NewsBeauty TrendsBeauty How-ToHairHair TrendsHair Color