California Barber Written ExamHair Care ServicesMedium

A client with 75% gray hair desires a permanent hair color that will provide full coverage and a natural-looking result. Which type of hair color product is generally recommended for effectively covering a high percentage of gray hair?

  1. ASemi-permanent hair color
  2. BDemi-permanent hair color
  3. CTemporary hair color
  4. DPermanent hair color
Show answer & explanation

Correct answer: D. Permanent hair color

Permanent hair color is formulated to penetrate the hair shaft, mix with the natural pigment, and provide full, long-lasting coverage for gray hair. Demi-permanent, semi-permanent, and temporary colors offer less coverage and are not ideal for high percentages of gray.

Why the other options are wrong

  • A. Semi-permanent color coats the hair surface and washes out, providing no significant gray coverage.
  • B. Demi-permanent color only stains the cuticle and partially penetrates the cortex, offering translucent coverage that fades, not full gray coverage.
  • C. Temporary hair color simply coats the hair surface and washes out with one shampoo, offering no gray coverage.

Permanent Hair Color for Gray

Permanent hair color is the only type of hair color that provides 100% opaque coverage for gray hair, as it penetrates the hair shaft to deposit artificial pigment.

  • Mixes with natural hair pigment.
  • Penetrates the hair cortex.
  • Provides long-lasting, opaque coverage.
  • Ideal for full gray hair coverage.

Memory trick: Permanent commitment for permanent gray.

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