Step 1: Mix developer and the colorant in a non-metallic bowl in a 1:1 ratio.
Step 2: Wear gloves (you can find it in the box) and start applying the Garnier Raspberry Red hair color at the roots and then cover your entire hair including the tips. You can divide your hair in sections to make the task easier.
Step 3: Leave the Garnier hair color on your hair for 30 minutes.
Step 4: Wash your hair with water. Then, apply a conditioner and wash it again.