What is a color filler and when would you use one?

• A. A filler cleans hair before color.
• B. A filler increases porosity.
• C. A filler restores missing primary/secondary pigments to even porosity and level before applying a color to prevent bands.
• D. A filler adds shine.

Answer: (C)

Color filler is used to restore missing primary and secondary pigments in the hair to create an even base before applying the final color. When hair is uneven in porosity or has been lifted, different sections take color at different rates, which can cause bands or uneven results. The filler deposits balanced pigments to even out porosity and level so the final shade deposits uniformly and reads true. It's especially helpful when correcting color or moving from a light base to a target shade, ensuring uniform uptake and preventing banding. It isn’t about cleansing, increasing porosity, or simply adding shine.