Ace the South Dakota Cosmetology Test 2025 – Style Your Future with Confidence!

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What are the primary components of a hair structure?

Keratin, oils, and moisture

Cuticle, cortex, and medulla

The primary components of hair structure are the cuticle, cortex, and medulla.

The cuticle is the outermost layer of the hair and consists of flat, overlapping cells that help protect the inner layers from damage and environmental factors. It also plays a role in the shine and overall appearance of the hair.

The cortex is the thickest layer, situated beneath the cuticle, and it contains fibrous protein and a high concentration of melanin, which gives hair its color. This layer provides strength, elasticity, and texture to the hair, influencing how it behaves when styled.

The medulla, while not present in all hair types, is the innermost layer. It is made up of a soft, spongy texture and can play a role in the overall strength and structure of the hair.

Understanding these components is crucial for cosmetologists, as each layer contributes to the hair's characteristics and behavior under chemical treatments and styling.

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Strand, root, and shaft

Root, shaft, and bulb

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