Deepshine Ultimate Blonde Blue Powder Lightener, 17.64 oz. RUSK® Deepshine® Ultimate Blonde Blue Powder Lighter has integrated bond protection, INUPRO TECHNOLOGY™, which helps to shield hair during the lifting process to maintain the structural integrity of the hair. KEY BENEFITS: Integrated Bond Protection INUPRO TECHNOLOGY? Premium lightening, up to 9 levels of lift Creamy consistency for easy application Dust-reduced formula USAGE TIPS: For best results and optimal shine, use with Deepshine® Shine Enhancing Cream Developers. Off-scalp application 1:2 mixing ratio Timing up to 45 minutes Always perform a strand test. Do not process with heat.