Fillers are used in color correction to achieve what?

• A. To seal cuticle
• B. To replace missing pigments and equalize porosity
• C. To strengthen the hair
• D. To darken the natural color

Answer: (B)

Fillers in color correction are used to replace missing pigments and balance porosity, creating an even base for the final color. When hair has been lightened or chemically treated, its cortex can lose pigments and become uneven in porosity. A filler fills in those pigment gaps and smooths out porosity differences so subsequent color deposits more uniformly across the strand. This helps prevent patchiness and helps you reach the desired shade reliably. It’s not about sealing the cuticle, strengthening the hair, or simply darkening the natural color—the goal is to restore pigment balance and porosity so color can take evenly.