1) In the context of the hair structure, which structural component is responsible for the reflection and absorption of light? a) Medulla b) Cuticle c) Cortex d) Sebaceous glands 2) When discussing hair colour change, what term represents the process of lightening the natural colour? a) Toning b) Reduction c) Oxidation d) Demi- Permanent 3) How is "reduction" best defined in the context of hair colour correction? a) The process of lightening the hair. b) The removal of unwanted colour molecules c) Adding colour pigments to achieve a desired shade. d) Closing the hair cuticle after color application 4) Which technique involves applying a colour opposite to the unwanted tones to neutralize them in colour correction? a) Balayage b) Toning c) Reduction d) Ombre 5) Why is the pH level important in the context of hair colour alteration? a) It affects the rate of oxidation b) It determines the thickness of the cuticle c) It influences the reduction process d) It regulates the production of sebum 6) Which layer is crucial for protecting inner layers and influencing shine and smoothness in hair structure? a) Medulla b) Cuticle c) Cortex d) Papilla 7) Why is understanding the client's hair structure important during a colour correction consultation? a) To recommend suitable hair products b) To determine the client's natural hair color c) To assess potential damage during the color correction process. d) To decide on the final colour without any client input 8) What is the primary pigment responsible for red and yellow tones in hair colour? a) Pheomelanin b) Eumelanin c) Melanoma d) keratin melanin 9) When correcting colour in over-processed hair, what method is often used to add depth and richness? a) Highlighting b) Lowlighting c) Balayage d) Ombre 10) Which term refers to the underlying pigments exposed during the hair lightening process? a) Primary colors b) Tertiary colors c) Contributing pigments d) Neutral tones

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