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The answer depends on what you’re looking for specifically and what you consider important. Bell peppers are chock full of vitamins C and A and biotin, essential for keeping hair healthy. Bell peppers come in various colors, including red, yellow, green, and orange. Other things, like age, genetics, medication use, environmental exposure, and overall health, also play a role in hair growth.

Does Smoking Cause Biotin Deficiency?
A lack of zinc in the diet may promote telogen effluvium, a common but reversible form of hair loss caused by a lack of nutrients. Taking a zinc supplement may reverse the effects of hair loss caused by zinc deficiency (28). Fatty fish is also a great source of protein, selenium, vitamin D3, and B vitamins, which may help promote strong and healthy hair (11).
Neuherbs Plant Based Hair Biotin

But if you’ve long been taking biotin for hair benefits and noticed absolutely zero difference in how long or thick it is, you might be wondering if it’s just a capsule full of lies. So, I turned to board-certified dermatologist Dhaval G. Bhanusali, MD, and trichologist Bridgette Hill with Paul Labrecque Salon and Skincare Spa for the facts. If you plan to take a supplement with biotin, let your doctor know before having any blood tests done since the vitamin can interfere with certain lab test results. Those who are pregnant and breastfeeding can also develop low biotin levels despite normal dietary intake of the vitamin. This may be due to increased use of the vitamin, impaired absorption, or both (10).
What are the side effects of biotin?
Also known as vitamin H, biotin is one of the B complex vitamins that help the body convert food into energy. It is intended for general informational purposes and is not meant to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.
Adults need 30 micrograms of biotin each day to avoid a deficiency. Working more biotin into your system (whether through supplements or diet) is generally safe. In some rare cases, too much biotin from supplements can cause stomach issues, trouble sleeping and skin rashes. The biotech brand has harnessed its hero ingredient, NX35 Growth Technology, in addition to garlic and wheat-derived plant exosomes to create PowerCycle Scalp Treatment Serum, a $58 serum that promotes hair density.
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Colaco says the one exception is the very few people with an actual biotin deficiency. "Studies have shown that people who fall into this category respond well to supplementation," she says. "In most other cases, there is limited evidence to show it will help you. So many dermatologists still recommend it, as there is also no evidence that it can hurt you." Although there is little evidence of direct health consequences of biotin supplementation, excessive intake may interfere with laboratory test results.
How much biotin should someone take per day?
"Biotin can help maintain the health of your nervous system, which is important for healthy hair growth and prevention of hair loss," says Friese. Try this one from Setu as it promises to make your hair strong and healthy. This powder contains naturally-extracted ingredients like bamboo shoot, spinach, amla, sesbania extract, guava leaf and beetroot juice powder.
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For now, there isn’t enough research to definitively state that biotin can help grow hair. The brand is expected to reach around $2 million in sales for its first year on the market, according to industry sources. The strategy is working thus far, with the brand having sold out of its debut product — which only launched in February. All products featured on Glamour are independently selected by our editors. However, when you buy something through our retail links, we may earn an affiliate commission. However, overconsumption of red meat, especially processed red meat, has been linked with an increased risk of cardiovascular disease, colorectal cancer, and type 2 diabetes (35).
Although the evidence to support biotin alone for hair growth is weak and limited, the evidence is slightly stronger for preventing hair loss. Further, the study was small, and it’s possible that the participants were deficient in one or more nutrients present in the supplement that affect hair health. Any such deficiency could have been corrected through the study period, resulting in hair growth. In an older 2012 study, women with self-perceived thinning hair were randomized to receive either a multi-ingredient hair growth supplement that contained biotin or a placebo for 6 months (4). This article explains the link between biotin and hair health and whether the vitamin is effective and safe for hair growth or preventing hair loss. Maybe you’re not worried about biotin deficiency but wonder whether a biotin supplement could help you get amazing hair.
Older adults, heavy drinkers, smokers, and malnourished children are also more likely to have low biotin levels. Usually, symptoms of biotin deficiency are treated with a 5,000 mcg supplement regardless of the cause. If you choose to supplement, biotin can be taken alone or with other B-complex vitamins in multivitamin form. This is far more than doctors recommend, although for most people the extra biotin shouldn’t present any health problems.
Biotin is often packaged together with other ingredients in a multivitamin or hair growth supplement. These can boost B-vitamin levels across the board or promote healthier hair, skin, and nails. One of the most popular hair-health supplements on the market is Country Life Maxi-Hair Plus, which contains 5,000 mcg of biotin, vitamins A, C, and E, calcium, folate, zinc, and more. Users say a good choice for a B-vitamin booster is Garden of Life Vitamin Code Raw B-Complex, which contains 325 mcg of biotin and other vitamins derived from raw, organic fruits and vegetables.
“If your hair is falling out at the roots, often something is going wrong in your body or in your life situation,” Dr. Bergfeld says. Though promising, it’s unknown if the participants had an existing biotin deficiency and if the same results would be found in men (13). In addition, it’s naturally produced in your body by intestinal bacteria, making it easy to attain healthy levels (4). To systematically review the literature on biotin efficacy in hair and nail growth.
However, little is known about biotin’s role in hair health and whether this supplement can truly help. Combine those with the right amount of biotin — as well as a few other natural ingredients like caffeine, saw palmetto, and green tea — for a head of hair that looks as healthy as possible. If you do want to support your hair health with the help of biotin, there are a few options for you. Oxidative stress occurs when free radicals overwhelm the body’s antioxidant defense system. Vitamin C helps promote collagen production, which can help strengthen your hair strands.