\u201cThe initial approach should involve addressing any potential nutritional deficiencies through a balanced diet<\/a> rich in essential vitamins and minerals, to support overall health, encourage hair growth and prevent excessive shedding,\u201d Dr Doshi explains to Vogue. Although a consistent haircare routine and looking after scalp health<\/a> play important supporting roles in this process, supplements can offer more targeted support.<\/p>\n \u201cIf you\u2019re considering supplements, it\u2019s advisable to consult a healthcare professional to assess your needs, potential risks and possible interactions with existing medical conditions or medications,\u201d says Dr Doshi.<\/p>\n What are hair growth vitamins, and do they really work?<\/p>\n Hair growth is a highly complex process that depends on each individual\u2019s circumstances and often requires a multifaceted approach. According to Dr Gordon, \u201c[the best hair growth vitamins] are certainly beneficial, and if you\u2019re deficient in certain amino acids, omega fatty acids or other vitamins, they\u2019re essential for providing the body with the basic building blocks it needs for hair growth.\u201d<\/p>\n Many hair growth gummies and capsules also contain botanical extracts and other natural ingredients that may mimic the effects of certain pharmaceutical hair growth treatments, offering alternative ways to stimulate growth. Some may also help address hormonal changes, stress and other health concerns.<\/p>\n However, as Vitti explains, taking larger quantities of micronutrients doesn\u2019t always lead to more hair growth, for two main reasons: first, the body eliminates what it cannot use, and second, people with digestive issues may struggle to absorb nutrients properly. Results also take time, sometimes as long as three to six months before noticeable changes appear.<\/p>\n It can also be incredibly difficult to remain caught in a cycle of stress and hair loss (which creates even more stress<\/a>), so it\u2019s important to consider your overall health and wellbeing if you decide to incorporate these vitamins into your routine.<\/p>\n Which vitamins and ingredients are good for thinning hair?<\/p>\n According to Dr Gordon and Dr Kim, some of the most common deficiencies associated with hair loss include iron and vitamin D, as well as B vitamins and amino acids (proteins). Some of the ingredients they recommend include:<\/p>\n Saw palmetto: This natural blocker of dihydrotestosterone (DHT), a hormone that plays a significant role in hair loss, is considered an effective ingredient, although it\u2019s important to discuss its potential benefits and drawbacks with your doctor. Who should take these supplements, and what\u2019s the best way to use them?<\/p>\n According to Vitti, if you feel that your daily caffeine consumption, medication use, alcohol intake, menstrual cycle or periods of intense stress, dieting or demanding exercise are depleting your body\u2019s micronutrient levels, taking supplements may be particularly helpful in replenishing them.<\/p>\n Nevertheless, most people can take many of these supplements. Ideally, there should be different formulations tailored to sex, age and other factors. If you\u2019re trying to conceive or are pregnant, particular care should be taken with certain ingredients, some of which should be avoided, warns Dr Gordon.<\/p>\n Which vitamin deficiencies can cause hair loss?<\/p>\n According to Dr Gordon, vitamin D and B vitamin deficiencies are among the most common in people experiencing hair loss. Although these deficiencies aren\u2019t always the direct cause, these nutrients provide essential building blocks for hair growth. \u201cOther important laboratory tests to consider include a full blood count to rule out anaemia, as well as thyroid function tests, among others,\u201d she adds.<\/p>\n According to Dr Kim, several nutritional deficiencies are associated with hair loss, including:<\/p>\n Iron deficiency: \u201cIron is essential for producing red blood cells, which carry oxygen to the hair follicles,\u201d says Kim. A deficiency can lead to thinning and even hair loss. Iron deficiency is particularly common in women due to blood loss during menstruation, making it one of the most frequent nutritional deficiencies associated with hair loss. Maintaining adequate iron levels through diet or supplementation can help support healthy hair growth. Good sources include red meat and leafy green vegetables such as spinach. Are there any side effects to watch out for?<\/p>\n \u201cThere are always potential side effects,\u201d says Dr Gordon, emphasising the importance of sourcing botanical ingredients from reputable, trustworthy suppliers because research remains limited. Although many plant-based ingredients target dihydrotestosterone, potentially leading to side effects associated with low testosterone levels, such cases are generally rare.<\/p>\n Excessive biotin intake can cause acne and should be discontinued before certain blood tests to avoid interfering with laboratory results. Iron supplements can cause constipation, while collagen may trigger diarrhoea or gastrointestinal discomfort in some people.<\/p>\n How long does it take for hair growth vitamins to start working?<\/p>\n \u201cHair growth is a slow process, with hair growing an average of around 1.25 cm per month,\u201d explains Kim. Hair growth vitamins, which often contain biotin, vitamin D, zinc and other nutrients, are designed to support the natural hair growth cycle.<\/p>\n However, results can vary depending on factors such as genetics, digestive absorption issues, hormonal conditions (such as PCOS), reduced thyroid function, diet and lifestyle habits, including stress. Despite these challenges, Kim notes that, with the right approach, some people may begin noticing improvements in hair texture and reduced shedding within a few weeks, while more substantial growth and thicker hair may take three to six months.<\/p>\n As with any form of supplementation, consistency is key: \u201cStopping supplements or failing to address underlying issues such as hormonal imbalances and gut health can quickly undo the progress made towards healthy hair growth,\u201d warns Kim.<\/p>\n How do you choose the right hair growth vitamin for you?<\/p>\n Don\u2019t worry too much about whether your hair growth supplement comes in the form of soft capsules, tablets or gummies. What really matters is choosing a product tailored to your specific needs. According to Dr Song, the first step is identifying possible causes of hair thinning, such as nutritional deficiencies, stress or hormonal imbalances.<\/p>\n \u201cLook for a balanced blend of ingredients, such as a multivitamin containing vitamin D, zinc, omega-3 fatty acids and iron,\u201d she advises. Vitamin E is also beneficial, as it promotes circulation and stimulates hair follicles, helping to improve hair density.<\/p>\n If you\u2019re unsure about the underlying cause of your hair loss, it\u2019s essential to consult a healthcare professional for personalised advice, particularly when potential nutritional deficiencies are involved. When choosing a product, always opt for reputable, established brands registered with the FDA and supported by high-quality clinical evidence.<\/p>\n When should you see a doctor about hair loss or thinning?<\/p>\n In general, everyone experiences some degree of hair loss over time. \u201cIt\u2019s normal to lose up to 100 hairs a day,\u201d says Dr Song. However, she advises seeking medical advice if hair loss is sudden or excessive, such as when hair falls out in clumps, bald patches appear or thinning becomes particularly noticeable in certain areas of the scalp.<\/p>\n Scalp symptoms such as itching, pain or flaking can also contribute to hair loss and may require medical treatment. It\u2019s also important to see a doctor if thinning hair is accompanied by general symptoms such as fatigue<\/a> or weakness, as laboratory tests may be needed to identify possible underlying health problems.<\/p>\n Dr Song also points out that if you\u2019ve tried your own treatment regimen without seeing any improvement after three to six months, it\u2019s time to arrange a dermatological consultation.<\/p>\n Once a specialist has identified the underlying cause and given you the go-ahead to use a supplement as part of your treatment, you can find an option suited to your needs among the expert-recommended formulas below.<\/p>\n Best for digestion: Wellbel Vegan Hair Growth Supplement<\/p>\n Why we love it: According to Alisa Vitti, a specialist in functional nutrition and women\u2019s hormonal health, Wellbel\u2019s plant-based blend contains botanicals such as saw palmetto, which may be particularly beneficial for women experiencing androgen-related hair loss. However, what sets this supplement apart is the inclusion of betaine HCl, which helps with protein absorption in people with low stomach acid.<\/p>\n This condition is more common than many people realise and can be an underlying cause of various symptoms, including peeling nails, poor hair growth, anxiety, difficulty digesting meals containing animal protein, burping and bloating after eating, as well as increasing sensitivities to certain foods. \u201cIf you suspect you have low stomach acid, Wellbel could be a good choice,\u201d says Vitti.<\/p>\n How to use: Take three capsules once daily.<\/p>\n When to expect results: Visible results within 90 days.<\/p>\n Key ingredients: Saw palmetto fruit extract; nettle leaf; PABA; betaine HCl.<\/p>\n Best overall: Nutrafol Hair Growth Vitamins<\/p>\n Why we love it: When it comes to hair growth, Nutrafol is almost always mentioned, as it\u2019s recommended by many leading dermatologists. \u201cNutrafol is plant-based and backed by science. It provides the essential building blocks for hair growth while also addressing other systems in the body that affect hair health and overall wellbeing,\u201d says board-certified dermatologist Dr Jennifer Gordon.<\/p>\n There are several formulations tailored to men, women and different age groups and life stages, including the postpartum period. The women\u2019s formula has been clinically tested to provide the necessary vitamins, minerals and natural ingredients that may benefit women aged 18 to 44 experiencing thinning hair.<\/p>\n How to use: Take four capsules once daily.<\/p>\n When to expect results: Visible results within three to six months.<\/p>\n Key ingredients: Saw palmetto; ashwagandha; organic maca root.<\/p>\n Best with ashwagandha: Moon Juice SuperHair Vitamins<\/p>\n Why we love it: We asked board-certified dermatologist Dr Teresa Song for her hair growth recommendations, and she pointed us towards Moon Juice. \u201cIt contains a multivitamin complex as well as adaptogens for stress reduction<\/a>, such as ashwagandha and ginseng,\u201d she explains.<\/p>\n Although the exact formula is proprietary, the brand states that it includes bioavailable and bioactive vitamins A, B, C, D, E and K, which help address potential nutritional deficiencies. It\u2019s also designed to help balance stress hormones, a much-needed benefit in today\u2019s fast-paced world.<\/p>\n How to use: Take four capsules daily.<\/p>\n When to expect results: Visible results may appear in as little as four weeks.<\/p>\n Key ingredients: Multivitamin complex; ashwagandha; ginseng; horsetail; saw palmetto.<\/p>\n Best gummies: Vegamour Biotin Supplement<\/p>\n Why we love it: Vegamour\u2019s shampoos, conditioners and styling products are already among our favourites for promoting healthy hair, and the brand also offers supplements in gummy and powder form. According to Dr Gordon, these biotin gummies are \u201cnatural, vegan and contain MCT oil, which is excellent for reducing stress and has antioxidant properties. They\u2019re easy to take (just once a day) and formulated as a clean product.\u201d<\/p>\n They also have a strawberry flavour, making them an excellent choice for anyone who prefers a tasty gummy supplement to tablets or capsules.<\/p>\n How to use: Take one gummy daily.<\/p>\n When to expect results: Visible results within three to four months.<\/p>\n Key ingredients: Biotin; folic acid; vitamins A, B5, C, E, B6 and B12.<\/p>\n Best for hair restoration: Viviscal Hair Growth Supplements<\/p>\n Why we love it: Viviscal hair growth supplements are known for their potent combination of minerals, vitamins and essential nutrients believed to encourage hair growth<\/a>. Dr Doshi explains: \u201cIngredients such as biotin, iron, zinc, vitamin C and the marine protein complex found in Viviscal are considered beneficial for hair health.\u201d Clinical studies have also been conducted to support claims of thicker, fuller hair.<\/p>\n How to use: Take two tablets daily.<\/p>\n When to expect results: After 90 days of consistent use.<\/p>\n Key ingredients: Zinc; vitamin C; iron; niacin.<\/p>\n Best probiotic supplement: Love Wellness Healthy Hair Probiotics<\/p>\n Why we love it: Not only is this supplement rich in probiotics, but it also contains vitamins B12 and B6, along with everyone\u2019s favourite, biotin. Although more research is needed to fully understand the role of probiotics in combating hair loss, this probiotic formula includes AnaGain Nu, a clinically tested protein designed to address the underlying causes of hair shedding, including hormonal factors, environmental influences, stress-related hair loss and other triggers.<\/p>\n How to use: Take one capsule daily, with or without food.<\/p>\n When to expect results: After four to eight weeks of daily use.<\/p>\n Key ingredients: Vitamin B12; vitamin B6; biotin.<\/p>\n Best for stress-related hair loss: Divi Hair Vitamins<\/p>\n
\nAshwagandha: An antioxidant known for helping to reduce stress, which has been shown to support hair growth and reduce breakage.
\nTocotrienol: May increase hair density.
\nCurcumin: Known for its potential to reduce levels of dihydrotestosterone, which is associated with hair loss.
\nCollagen: Although there is still no definitive conclusion about its effectiveness, anecdotal evidence and research suggest that collagen supplements may encourage hair growth, improve hair strength and benefit the skin and nails.
\nBiotin: Once celebrated as the ultimate hair growth vitamin, biotin has recently fallen somewhat out of favour due to a lack of robust scientific evidence. It\u2019s generally unlikely to cause harm, but high doses may contribute to acne or interfere with certain laboratory test results.
\nMinoxidil: \u201cMinoxidil is a topical treatment that stimulates hair follicles and extends the growth phase of the hair cycle,\u201d explains Dr Kim. It\u2019s widely used for androgenetic alopecia (hereditary hair loss) and can encourage regrowth in some people. However, it must be used continuously, as stopping treatment can lead to renewed hair loss.
\nZinc: Dr Kim points out that zinc helps maintain the sebaceous glands surrounding hair follicles, ensuring that they function properly. It also plays a role in the production of DNA and RNA, which is essential for follicle health<\/a>. Adequate zinc levels may help prevent shedding and support healthy hair growth.
\nOmega-3 and omega-6 fatty acids: Dr Kim emphasises that omega-3 fatty acids, particularly EPA and DHA found in fish oil, have anti-inflammatory properties that may help open up hair follicles and encourage growth. They also nourish the hair, improving elasticity and shine<\/a>. Omega-6 fatty acids, particularly alpha-linolenic acid, are essential for healthy skin and hair. They help maintain the scalp\u2019s protective barrier, retain moisture and reduce inflammation. A healthy scalp is crucial for strong hair growth.
\nVitamin A: According to Dr Kim, vitamin A is essential for cell growth, including the cells involved in hair production. It also helps the scalp produce sebum, the natural oil that moisturises the scalp and keeps hair healthy. However, excessive vitamin A intake can cause hair loss, so balance is essential.
\nVitamin C: Dr Kim notes that vitamin C is a powerful antioxidant that helps protect hair follicles against oxidative stress. It\u2019s also essential for collagen production, which strengthens the hair\u2019s structure.
\nVitamin D: As previously mentioned, vitamin D<\/a> helps support the formation of new hair follicles and may prevent thinning and hair loss. Sunlight is a natural source of vitamin D, but supplementation is often necessary when levels are deficient.<\/p>\n
\nVitamin D deficiency: Vitamin D plays a role in the formation of new hair follicles, and a deficiency may result in slower hair growth or hair loss, Kim explains. \u201cIt\u2019s best to get natural sunlight so the body can produce vitamin D itself. Take a brisk walk early in the morning or later in the day and aim for 15 to 20 minutes of sun exposure,\u201d she advises. She also recommends oral vitamin D supplementation, noting the importance of magnesium in helping the body convert vitamin D into its active form.
\nZinc deficiency: Kim explains that zinc is essential for tissue growth and repair, including hair. \u201cLow zinc levels can lead to hair thinning or loss.\u201d
\nBiotin deficiency: Biotin (vitamin B7) supports the production of keratin, the protein that forms the structure of hair. \u201cA deficiency can cause brittle hair and hair loss,\u201d says Kim.
\nProtein deficiency: Hair is primarily made up of protein. \u201cInadequate protein intake can weaken hair and cause it to fall out,\u201d warns Kim.
\nIodine deficiency: \u201cIodine deficiency can cause hair loss because iodine is an essential mineral needed to produce thyroid hormones, which regulate numerous bodily functions, including hair growth,\u201d explains Kim. When iodine levels are low, the thyroid cannot produce enough hormones, leading to a condition known as hypothyroidism. Ensuring adequate iodine intake through diet (or supplementation, if necessary) is important for maintaining healthy thyroid function and preventing hair loss associated with iodine deficiency.<\/p>\n![\"\"\/](\"https:\/\/www.newsbeep.com\/us\/wp-content\/uploads\/2026\/10\/HairGrowth.jpg\")
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