What it is:
Improves results vs a regular 40–50 volume peroxide. Violet-based for cooler tonal values—drabs out brass
What else you need to know:
Lift-Thru Developer 50 Volume is the ultimate enzyme tint and bleach developer used for on scalp lifting action for drabbing, high lift, bleaches and tints. It breaks through the gold band to eliminate gold and brassy tones. It's the strongest on scalp lifting action available. Works in 10-20 minutes.