This product creates lustrous highlights and special effects in no time. It forms a rich, creamy consistency that is easy to handle and is de-dusted to minimize powder fly-away. Clairol BW2 Lightener is an extra-strength lightener that provides colorists the ultimate creative control over the lightening process. Extra-fast lightening formula.Directions: Mix BW2 with 10 or 20-volume developer in a plastic bowl to a creamy consistency. Apply where highlights are wanted. Process up to 30 minutes, or until desired lightness is achieved.