Step 1: Mix
Mix 20ml Concerto Hair Colour Cream + 20ml Peroxide (Developer)
Always use a 1:1 ratio

Step 2: Apply
Apply evenly to dry hair
(Start at roots, then lengths if needed)

Step 3: Process Time
Leave on for 45 minutes

Step 4: Rinse
Rinse thoroughly with water until clear
Follow with shampoo and conditioner

100ml

• Always do a strand test first
• Use gloves
• Do not exceed processing time
• Choose the correct developer strength (10/20/30 Vol)
• Results depend on your starting hair colour