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What are the two layers of the hair most affected by chemical texture service?

  1. Cortex and medulla

  2. Cortex and cuticle

  3. Cuticle and medulla

  4. Medulla and cortex

The correct answer is: Cortex and cuticle

Chemical texture services involve altering the structure of the hair through the use of chemicals. This process primarily affects the two innermost layers of the hair, the cortex and cuticle. The cortex is responsible for the hair's strength and elasticity, while the cuticle is the protective outer layer. The medulla, on the other hand, does not play a significant role in the hair's structural makeup and is not affected by chemical texture services. Option A is incorrect because the medulla is not one of the layers primarily affected by chemical services. Option C is incorrect because although the cuticle is affected, the medulla is not. Option D is incorrect because the cortex is affected, but the medulla is not one of the main layers affected by chemical texture services. Therefore, option B is the correct answer.