Using a non-metallic bowl, mix 2oz of hair color with 2oz of 10V or 40V developer. Use 10 Volume Developer with a processing time of 10-20 minutes when applying to pre-lightened hair. Use 40 Volume Developer with a processing time of 30-40 minutes when applying to virgin hair that has not been previously color treated.
For the most vibrant results apply to natural hair color levels 6 (dark blonde) and lighter. Pre-lightening prior to application on darker virgin hair color or hair that has been previously colored is often necessary for the most vibrant results. Use suitable protective gloves and apply color on desired strands. After processing rinse thoroughly.
Use petroleum jelly around hair line to keep skin from staining. Remember, if the hair is already color treated you may need to remove the previously applied color prior to your BTZ(TM) application. First, complete a test strand to ensure desired results as well as a preliminary patch test for safe product use.
Note: Permanent Hair Color alters the natural hair color and will not revert back to virgin hair.