Which part of the eyebrow/eyelash hair holds tint?

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Multiple Choice

Which part of the eyebrow/eyelash hair holds tint?

Explanation:
The cortex is the part that holds tint. It’s the middle layer of the hair shaft that contains the pigment melanin, which gives color. Tint molecules penetrate the cuticle (the outer protective layer) and deposit color in the cortex, where the pigment is stored, producing the shade you see. The medulla is the hair’s central core and isn’t involved in coloring, often missing in finer eyebrow/eyelash hair. The root sits inside the follicle and isn’t where the tint deposits color during a typical tinting treatment.

The cortex is the part that holds tint. It’s the middle layer of the hair shaft that contains the pigment melanin, which gives color. Tint molecules penetrate the cuticle (the outer protective layer) and deposit color in the cortex, where the pigment is stored, producing the shade you see. The medulla is the hair’s central core and isn’t involved in coloring, often missing in finer eyebrow/eyelash hair. The root sits inside the follicle and isn’t where the tint deposits color during a typical tinting treatment.

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