How is a porosity test performed and what does high porosity indicate for processing?

• A. Porosity test uses a moisture/porosity check by placing a strand in water and observing saturation rate; high porosity hair absorbs water quickly and loses moisture easily.
• B. Porosity is tested by color change.
• C. Porosity test uses heat only.
• D. Porosity has no impact on processing.

Answer: (C)