Volume 40 Developer

Directions:
Demi-permanent: Mix any shade of PRORITUALS Hair Color Cream with equal parts Volume 40 Developer. Let process for 45–50 minutes. Lightens 4+ tones.

Semi-permanent: Mix any shade of PRORITUALS Hair Color Cream with equal parts Volume 40 Developer and Hydrate Intensive Treatment. Let process for 45–50 minutes. Lightens 4+ tones.