A semi-permanent colour with acidic p H value, Wella Color Fresh Dark Intense violet Brown 3.66 blends grey/white hair by up to 40%. The new formulation lasts up to 35% longer for fabulous colour results & intensive shine. Wella Color Fresh Dark Intense violet Brown 3.66, which lasts up to 10 shampoos, helps you achieve gentle colour effects, refresh your permanent colour & level out uneven tones. With no ammonia or peroxide Color Fresh is gentle on your hair; it washes out evenly & completely & may be used directly after perming. Directions of use: Wearing suitable gloves apply colour directly from the bottle. Apply colour evenly to your hair, working through lengths & ends to ensure even distribution. Comb through. Depending on the condition & desired colour intensity leave to develop for Approx. 20 minutes. A more intense colour result may be achieved with added heat & by increasing the development time. After development, emulsify with warm water & then rinse thoroughly. Style as usual.