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With that in mind, consider these the serums worth trying to achieve your unique hair goals. Though its use as a hair and nail growth supplement is prevalent, research demonstrating the efficacy of biotin is limited. In cases of acquired and inherited causes of biotin deficiency as well as pathologies, such as brittle nail syndrome or uncombable hair, biotin supplementation may be of benefit.
Benefits of Biotin for Hair
Additionally, in vitro studies have shown that proliferation and differentiation of normal, nonpathologic follicular keratinocytes are not influenced by biotin [27]. There are many causes for hair loss or hair thinning—pregnancy, medication, stress, tight hair styling, or just plain genetics, to name a few. Some hair loss treatments are more intense than others, but scalp serums and certain hair oils are an easy topical place to start. These hair growth products help create an optimal scalp environment, promote hair growth, decrease hair loss, and strengthen individual strands. Of course, not all formulations are made equally, and not all serums effectively address hair health adequately.
Biotin for Hair Growth: Does It Work?
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If you are experiencing hair loss or hair shedding, it may be due to another nutritional issue, like an iron deficiency, or an underlying health condition, such as a thyroid disorder. Taking biotin would not be effective for either of these conditions. "Anecdotally, I've had a few patients report that taking biotin caused an acne flare," says Colaco. Online beauty communities on platforms like Reddit have discussed anecdotal correlations between taking biotin supplements and breakouts. The experts interviewed for this story say there haven't been clinical studies to prove whether or not taking biotin can result in acne or breakouts. However, if you feel you're having a skin reaction that may be a result of your daily biotin supplement, you could be onto something.
The 11 Best Hair Growth Serums for Long, Strong Hair
This technology is commonly used in tests that measure vitamin D, hormone, and thyroid levels. In fact, biotin has been found to interfere with the diagnosis of Graves’ disease and hypothyroidism (14, 15, 16). Biotin supplements are known for interacting with certain diagnostic tests that use biotin-streptavidin technology, and this can lead to incorrect results (14, 15, 16). Studies on biotin use and hair quality have been limited, but promising.
However, there are only a handful of studies on omega-3 fatty acids and hair growth. More studies are needed before health experts can make any recommendations. The recommended amount of biotin you need each day is up for debate and is thought to depend on your age.
In a different study, researchers found that children who experienced improved hair growth or quality after taking biotin supplements all had an underlying condition that caused a biotin deficiency (3). Biotin may support hair growth in people whose hair thinning or loss occurs due to a biotin deficiency. Other vitamin deficiencies may also affect the health of your hair. Biotin is an essential vitamin that helps with the production of keratin (a protein that’s in charge of forming nails, skin and hair).
If you’re experiencing hair loss, it’s best to speak with a healthcare professional to determine if there are any underlying causes. Therefore, it’s likely that supplementing would only be warranted in those with a biotin deficiency, though more research is needed. In a 2019 review, researchers found that men with MAA had slightly lower levels of biotin than those with no hair loss. However, the difference wasn’t significant enough to indicate a direct link between biotin and MAA (11). Male pattern baldness, or male androgenetic alopecia (MAA), is the gradual loss of hair on the scalp.
When will my vitamins start working?

Research suggests that vitamin A can affect sebum production, an oily substance that keeps hair healthy. A study published in 2015 found that women with thinning hair experienced some reduction in shedding after taking an oral marine protein supplement for 90 days. However, biotin was only one ingredient in this supplement, and the research was sponsored by a company that sells health and beauty products.
The best hair growth serums, at a glance
A cup (30 grams) of spinach provides up to 20% of your daily vitamin A needs (7). For example, 1 cup (144 grams) of strawberries provides 85 milligrams or up to 113% of your daily vitamin C needs (6). For instance, a quarter-cup of roasted almonds has 1.5 micrograms, but just six walnut halves have 9.5 micrograms. A quarter-cup of roasted sunflower seeds has 2.6 micrograms of biotin, more than the amount present in any other seed. You can take biotin as a multivitamin, B-vitamin complex, or individual supplement.
Taking them can also cause high biotin levels in your blood, which can interfere with certain lab tests, including those used to measure thyroid hormones, vitamin D, and heart health (2). For example, researchers in one study prescribed a biotin supplement to 22 patients with low biotin levels for hair loss following gastric sleeve surgery (6). In one study, a biotin deficiency was found in 38% of women complaining of hair loss. Of these participants, 11% had a history of deficiency risk factors, such as inflammatory bowel disease (IBD) or the use of certain medications like antibiotics (5). Despite these claims, though, there’s limited evidence to suggest that supplementing with biotin or lathering it through your hair promotes hair growth in non-deficient people.
There's no one best food to support hair growth, but a diet rich in various nutrients can help. It's also difficult to take too much of the nutrient due to its water-soluble nature. (In other words, excess amounts are simply excreted via the urine11.) But as with any supplement, it's important to check with your doctor before taking biotin. This will ensure the supplement won't interact with medications or other aspects of your health routine.
But it’s best to first make sure you’re eating a well-balanced diet of biotin-rich foods before considering too many supplements. Cureveda Grow Plant Based Biotin 1000 Mcg Powder promises to control hair fall and hair thinning. It contains silica, an essential mineral that can help improve hair lustre. Regular use of this plant-based biotin powder for hair growth may help strengthen the brittle hair. The presence of lycopene in this powder may also help prevent premature greying of hair. By boosting the blood circulation in the scalp, this powder can contribute to healthy follicles.
In order to properly treat hair shedding, it’s crucial to understand all of the culprits that could be driving this change—and there are more possibilities than you might think. If you are losing your hair gradually or noticing more scalp than you used to, and you have any concerns about it, contact a dermatologist sooner rather than later. Hair loss can be permanent, so the earlier you start treating it, the more likely you are to have better results. Results published in 2016 suggested that biotin was a safe therapy. In some participants, a high dose taken three times daily reduced symptoms after 9 months of use. Studies have suggested that high dose biotin therapy might help improve symptoms in people with multiple sclerosis (MS).