Serie Expert Blondifier Instant Resurfacing Concentrate.This professional formula infused with gluco poly phenol complex formula specially developed for sensitized bleached hair. Fiber is more resistant to avoid hair breakage. Cuticle are smoothed, hair intantly looks shinier, smoother and stronger. Direction To Use: Apply to shampooed, towel dried hair in an S movement on lengths and ends. You can apply between 10-20ml depending on the length and thickness of the hair. Massage in for better penetration, detangle. Leave in for 2 to 3 minutes. Rinse thoroughly.