Step 1: Wear gloves provided in the box, and mix the developer and colourant in a non-metallic bowl in a 1:1 ratio.
Step 2: Start by applying the mixture from the roots and work your way towards the tips, while diving your hair into sections.
Step 3: Leave the Garnier hair colour on for 30 minutes.
Step 4: Rinse with water, apply conditioner and rinse again.
We recommend performing a skin allergy test 24 hours before colouring your hair.