In the restructuring process, coarse, resistant hair with a strong compact cuticle requires a chemical solution that is

In the restructuring process, coarse, resistant hair with a strong compact cuticle requires a chemical solution that is

• A. Mild
• B. Highly alkaline
• C. Neutral
• D. Highly acidic

Answer: (B)

The effect of pH on the hair cuticle and chemical penetration is what this question tests. For restructuring coarse, resistant hair with a strong, compact cuticle, you need a solution that can lift and swell the cuticle scales so the restructuring agent can reach and break disulfide bonds. An alkaline environment does exactly that: it increases cuticle porosity, softens the scales, and allows deeper penetration of the chemical. With less alkaline options, the cuticle remains tight and penetration is limited, which isn’t sufficient for this hair type. A highly acidic solution would tighten the cuticle further, and neutral or mild solutions wouldn’t provide the needed swelling or effectiveness for resistant hair. So, choosing a highly alkaline solution is the most effective choice for this scenario.

The effect of pH on the hair cuticle and chemical penetration is what this question tests. For restructuring coarse, resistant hair with a strong, compact cuticle, you need a solution that can lift and swell the cuticle scales so the restructuring agent can reach and break disulfide bonds. An alkaline environment does exactly that: it increases cuticle porosity, softens the scales, and allows deeper penetration of the chemical. With less alkaline options, the cuticle remains tight and penetration is limited, which isn’t sufficient for this hair type. A highly acidic solution would tighten the cuticle further, and neutral or mild solutions wouldn’t provide the needed swelling or effectiveness for resistant hair. So, choosing a highly alkaline solution is the most effective choice for this scenario.