Arizona Cosmetology Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

Which vitamin is considered essential for healthy hair growth?

Vitamin C

Vitamin B7 (Biotin)

Vitamin B7, commonly known as Biotin, is essential for healthy hair growth due to its role in the synthesis of fatty acids and the metabolism of amino acids, which are the building blocks of proteins. Hair is primarily made up of a protein called keratin, and adequate levels of Biotin can help ensure that your body produces enough keratin for healthy hair. A deficiency in Biotin can lead to brittle hair and even hair loss, highlighting its importance in maintaining hair health. Additionally, Biotin is known to support the overall health of hair follicles, which plays a critical role in promoting hair growth and preventing hair thinning.

While other vitamins also contribute to hair health—such as Vitamin C for collagen production, Vitamin E for its antioxidant properties, and Vitamin D for follicle cycling—Biotin's direct influence on keratin production makes it particularly vital for promoting healthy hair growth.

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Vitamin E

Vitamin D

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