What is a color filler and when is it used in color services?

• A. A filler helps equalize porosity and base tone before color deposition to achieve uniform results, especially in correction.
• B. A filler adds shine to the hair without changing color.
• C. A filler is used to permanently straighten hair.
• D. A filler changes hair texture to be more coarse.

Answer: (A)

Color fillers normalize porosity and base tone so color deposits evenly, giving you a consistent result across the entire strand. They’re used before applying color, especially when hair has uneven porosity from previous chemical services or when you're correcting previous color issues. Porous areas tend to grab or shed pigment differently, which can lead to patchiness or shifts in shade. A filler fills those gaps and evenes out the underlying tone, creating a uniform canvas for the final color. It’s not about shine, straightening, or changing texture; its purpose is to balance porosity and base tone so the chosen color can take evenly.