7 Hair Growth Vitamins That Are Scientifically Proven


A popular hair growth vitamin, biotin helps strengthen hair follicles, promotes healthy hair growth, and reduces hair breakage and brittleness.

Vitamin C

Known for its antioxidant properties, vitamin C aids in collagen production, which is essential for healthy hair growth and maintaining strong strands.

Vitamin E

This vitamin improves blood circulation to the scalp, promoting nutrient delivery to hair follicles and supporting healthy hair growth.

Vitamin D

Adequate levels of vitamin D are crucial for hair follicle health. It helps reduce hair loss and supports the growth of new hair.


Also known as vitamin B3, niacin boosts blood flow to the scalp, nourishes hair follicles, and promotes thicker, healthier hair growth.


Iron deficiency can lead to hair loss. Supplementing with iron helps ensure proper oxygen and nutrient delivery to hair follicles, supporting hair growth.


Zinc plays a vital role in hair tissue growth and repair. It helps maintain a healthy scalp and supports the production of new hair cells.