What Are the Best Vitamins for Thicker Hair?

by Viviscal Hair Expert on November 10, 2022

This post was originally published on Mar. 28, 2015

As the old saying goes: you are what you eat. So if you want long, luscious hair, you need to eat the right vitamins for thicker hair. Keep reading to learn more about the best vitamins for hair growth and thickness. 

The 5 Best Vitamins for Hair Growth & Thickness

  1. Biotin (Vitamin B7)

Eggs have biotin

Biotin is one of the eight B vitamins and one of the best vitamins for thicker hair. Biotin helps your body break down the food you eat into energy. It also plays a vital role in the production of keratin, the protein that makes up hair. 

You can get more biotin in your diet by eating eggs, salmon, sweet potatoes, sunflower seeds, and almonds or by taking a biotin-rich hair supplement like Viviscal Hair Growth Supplement (more on that later). 

2. Iron

Iron is a mineral that helps our body to produce red blood cells. Red blood cells carry oxygen and nutrients to your body’s cells, including hair follicles. Without enough iron, your body cannot deliver enough nutrients to your hair follicles, and hair loss may result. 

Eating iron-rich foods like spinach, broccoli, tofu, and meat can help you to get more iron into your diet. 

3. Vitamin C

orange juice has vitamin C for hair growth

Orange juice has vitamin C

Vitamin C is an essential nutrient that plays a vital role in helping your body to build and repair tissues. In addition, vitamin C acts as an antioxidant, meaning that it helps to protect your cells from environmental stress. 

Another benefit of vitamin C is that it helps the body absorb more iron into the blood. Vitamin C also helps promote blood circulation to all body parts, including your scalp. More vitamins and minerals to the scalp means that your hair follicles are getting the nutrients they need for healthy hair growth. 

Foods such as bell peppers, dark leafy greens, tomatoes, and citrus fruits are excellent sources of vitamin C. 

4. Zinc


Zinc is another vital vitamin for thicker hair. Zinc is a mineral that your body needs but cannot store, so it’s essential to get enough zinc every day, whether through your diet or supplementation. 

Zinc plays a crucial role in the immune system and wound healing. But most important to the health of your hair, zinc is essential for both cell division and growth as well as protein synthesis. That may be why zinc deficiency has been linked to several types of hair loss. 

You can get more zinc in your diet by eating beef, pork, chicken, oysters, beans, or fortified foods. 

5. Collagen


While not technically a vitamin, collagen is essential for healthy hair growth. Collagen is one of the main structural components of your hair follicles and hair. Plus, it stimulates the production of keratin, the main protein in hair. 

While you can get all the nutrients you need for thicker hair through your diet, taking a hair growth supplement can help fill in the gaps in your nutrition. That’s where Viviscal Hair Growth Supplements come in. Viviscal contains vitamins for thicker hair, including vitamin C, iron, biotin, and zinc. Plus, Viviscal contains AminoMarTM, a proprietary marine protein complex rich in collagen. The combination of AminoMarTM plus key vitamins and minerals in Viviscal is scientifically proven to nourish thinning hair and promote existing hair growth*. In clinical studies, women saw a 32% increase in the number of terminal hairs and a nearly 40%

decrease in hair shedding in just three months+. 

+Ablon, G.; Dermatol Res Pract., 2015