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One of the best known vitamins for hair growth is a B-vitamin called biotin. Studies link biotin deficiency with hair loss in humans (5). Although biotin is used as an alternative hair-loss treatment, those who are deficient have the best results.
Supplement Your Diet with Vitamins and Minerals. Vitamins and minerals support your body's functions and are essential to general good health. They're also very important to how healthy your hair is and also how fast it grows. Vitamins increase scalp circulation, improve your hair's texture and strength and also add body and shine.