North Dakota Cosmetology Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 410

What vitamin is most commonly associated with hair health?

Vitamin A

Vitamin B6

Vitamin B7 (Biotin)

Vitamin B7, commonly known as Biotin, is most associated with hair health because it plays a crucial role in the metabolism of fats, carbohydrates, and proteins, which are key components of hair structure. Biotin is often included in hair care supplements due to its reputation for promoting hair growth and strength. Deficiency in Biotin can lead to thinning hair and alopecia, making it particularly significant for maintaining healthy hair.

While other vitamins such as A, B6, and C have their own benefits—like supporting the immune system, promoting circulation, and assisting with collagen production—Biotin specifically targets hair growth at the cellular level, making it the most relevant vitamin in terms of promoting not just the health but also the physical appearance of hair. This targeted benefit is why Biotin is frequently emphasized in discussions about hair health.

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Vitamin C

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