How do you apply DermaV10 hair dye?

To apply DermaV10 hair dye, start by performing a patch test 48 hours before use to check for Allergies. Prepare the dye according to the instructions, typically mixing the color cream with the developer in the provided applicator bottle. Apply the mixture evenly to dry, unwashed hair, starting from the roots and working your way to the tips. Allow it to develop for the recommended time before rinsing thoroughly with water and following up with conditioner.