Bye Bye Yellow Purple Shampoo is your go-to solution to help maintain blonde hair color. This 100% sulfate-shampoo neutralizes unwanted yellow and brassy undertones. Formulated for colored hair, blonde hair, bleached hair, highlighted brown hair, and silver hair.HueSync Tech features a precisely formulated purple pigment that effectively neutralizes the unwanted yellow tones, making it easy to achieve salon-quality results at home.Unlock the full potential of vibrant, long-lasting color by exploring our recommended products below:Color Maintenance Shampoo——Preserve your brilliance between color sessionsApplication Kit——Elevate your dyeing experience with our toolsColor Drops——Customize and intensify your hue for a personalized touchColor Depositing Conditioner——Intensify your color and infuse vibrancy with our specialized conditioner REVIVE COOL TONES: Bye Bye Yellow Purple Shampoo is your ultimate solution for banishing brassiness and reviving cool tones in blonde, gray, and color-treated hair. Whether you're sporting platinum blonde, silver, or highlighted and balayage shades, Bye Bye Yellow Shampoo keeps your color vibrant and fresh while also nourishing and repairing your hair. Why It's Special: HueSync Tech for Flawless Toning achieve perfectly neutralized, brass-hair with our advanced Huesync Tech. Even coverage, no over-toning, just natural, cool tones every time. SALON-WORTHY RESULTS: Powered by our patented HueSync Tech, this sulfate-purple shampoo delivers salon-level toning at home. SAFE & DERMATOLOGIST APPROVED: Unlike harsh drugstore shampoos, Bye Bye Yellow Shampoo is clinically tested and dermatologist-approved, making it safe for sensitive scalps and skin. HOW TO USE: Distribute evenly through wet hair and lather. Rinse thoroughly.