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

Question: 1 / 515

Which vitamin is essential for healthy hair growth?

Vitamin C

Vitamin D

Vitamin B7 (Biotin)

Vitamin B7, commonly known as Biotin, is essential for healthy hair growth. Biotin plays a crucial role in the metabolic processes that help in the production of keratin, a protein that is vital for the structure of hair. A deficiency in Biotin can lead to thinning hair and other hair-related issues. Additionally, Biotin contributes to the health of the scalp, promoting a suitable environment for hair to grow.

While vitamins C, D, and E have their benefits for overall health and can support hair health in indirect ways, they do not specifically target the metabolic processes that support the primary structure and growth of hair like Biotin does. Thus, focusing on Biotin is key when discussing vitamins specifically tied to promoting healthy hair growth.

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Vitamin E

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