The 8 Best Vitamins And Supplements For Hair Growth
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Our editors have researched and tested clean beauty and supplements for years. These are our picks for hair growth supplements that are clinically backed, easy to take, and third-party tested.
Hair loss doesn’t just affect your look — it can shake the way you feel about yourself from the inside out. Seeing your hair thin or change can feel like a wake-up call, one that goes beyond what’s reflected in the mirror. Whether it’s stress, hormones, or a lack of nutrients, it doesn’t just affect your hair — it hits at the core of how you see yourself. It’s a reminder that our bodies are always evolving, and sometimes, those changes can feel completely out of our hands.
The good news? Science is making real progress in understanding hair growth, and there are now solutions that actually work. Thoughtfully chosen supplements provide the nutrients your hair needs to recover. It’s not an overnight fix, but over time, these ingredients can restore your hair’s strength, texture, and growth. When you make science-backed supplements part of your routine, they stop being a quick fix and become a more sustainable solution — one that supports your body through all its changes.
What causes hair loss in women?
Hair loss in women can happen for a variety of reasons, often linked to both internal and external factors. Some common causes include:
- Hormonal Imbalances: Shifts in hormones, particularly during pregnancy, menopause, or postpartum, can cause shedding and thinning.
- Nutrient Deficiencies: Lack of essential nutrients, including vitamins like biotin, vitamin D, and zinc, can contribute to weak, brittle hair.
- Stress: Physical and emotional stress can lead to temporary hair loss, a condition known as telogen effluvium.
- Genetics: Female pattern baldness, often due to genetics, can cause hair thinning across the scalp, typically starting with the part widening.
- Medical Conditions: Disorders such as polycystic ovary syndrome (PCOS), autoimmune diseases, and anemia are linked to hair loss.
- Medications: Certain drugs, including those for cancer, arthritis, and depression, may have hair loss as a side effect.
While these factors can feel discouraging, supplements can help address some of the root causes and support new growth.
What should you look for in a hair growth supplement?
When searching for an effective hair growth supplement, there are a few key ingredients to keep an eye on:
- Biotin: This B vitamin is essential for healthy hair growth and structure. Biotin strengthens the hair shaft and prevents breakage.
- Vitamin D: Deficiency in Vitamin D has been linked to hair loss, particularly in conditions like alopecia areata.
- Zinc: A mineral that plays a crucial role in tissue growth and repair. It supports the hair growth cycle and reduces hair shedding.
- Collagen: Supports the skin, hair, and nails by providing structural proteins that prevent thinning.
- Iron: Low iron levels are linked to hair shedding. Iron-rich supplements help boost oxygen delivery to the scalp and hair follicles.
- Amino Acids: Amino acids like cysteine and methionine help produce keratin, the protein that makes up your hair.
How do hair growth supplements work?
Hair growth supplements work by providing the body with nutrients that may be deficient or low in certain areas. These nutrients promote the proper function of hair follicles and encourage healthy growth. For example, biotin strengthens hair strands and collagen improves the elasticity and strength of hair, preventing breakage. Supplements also support scalp health by increasing blood flow and nourishing the follicles with essential vitamins and minerals. The key to success is consistency and choosing supplements backed by clinical studies that support their effectiveness.
Why are clean and third-party tested supplements important?
Clean supplements avoid unnecessary fillers and artificial additives that may do more harm than good. Third-party testing ensures that the ingredients listed on the label are what’s inside the bottle — and it also guarantees the product is free of contaminants and has the proper dosages. We’ve only selected supplements with these standards so you can be sure you’re getting a product that is both effective and safe for long-term use.
Our criteria:
Our editors have taken clean supplements for our personal health for years — and we regularly research and correspond with the top brands on the market. For this guide, we’ve compiled our picks for hair growth supplements that use clean formulations, are backed by science, and easy to incorporate into your day-to-day. We regularly update this guide with emerging brands that meet the following criteria:
- CLEAN INGREDIENTS | We’ve chosen supplements for this guide that are free of unnecessary fillers, sweeteners, or artificial additives and are third-party tested for purity and safety.
- CLINICALLY BACKED | The brands on this list use ingredients supported by clinical studies or partner with experts to develop evidence-based formulas. We’ve prioritized those involved in ongoing research or with published clinical data.
- EASY TO INCORPORATE | These supplements are designed for convenience and taste, making them simple to add to your day. Below, we’ve noted the dosage so you can decide what works best for you.
If you’re looking to support your overall health from the inside out, check out our favorite women’s multivitamins and collagen powders, too.
1. Prose
Best For | Personalized hair care
Active Ingredients | Biotin, collagen peptides, amino acids
Daily Dose | 1-2 pills
Price Starting At | $40/month
Prose isn’t your average hair care brand — these are not “one-size-fits-all” products. Instead, they create a custom formula just for you based on a quick yet thorough survey about your hair type, concerns, and lifestyle. With ingredients like biotin, collagen peptides, and amino acids (all scientifically proven to help with hair growth and strength), Prose has got the right formula to support your unique hair health and goals. As a woman-owned, cruelty-free brand, they use vegan, sustainably sourced ingredients and eco-friendly packaging. It’s not just about great hair — it’s about supporting a brand that truly cares about you and the planet.
Customer Review | “This is amazing. I really tried everything else, every professional brand, and spent $100’s per bottle, but Prose is REAL ingredients and absolutely no damage. My hair is smooth, with no frizz, and it’s way beyond any hydration I’ve ever gotten from any other shampoo. I’m speechless right now. I’m just mad at myself that I didn’t try this sooner and wasted so much money on different brands. Prose, you saved my hair, my confidence has been through the roof. I can’t thank you enough!!” – Kathy S (Read more reviews)
2. Vegamour
Best For | Plant-based hair growth
Active Ingredients | Red clover, mung bean, biotin
Daily Dose | 1-2 capsules
Price Starting At | $36/month
Vegamour’s GRO Biotin Gummies are a simple, plant-based way to give your hair the nutrients it needs. They are also delicious so good luck not eating the whole bottle at once. Packed with biotin, folic acid, and a mix of vitamins — A, B5, B6, B12, C, and E — these gummies nourish the scalp and help promote thicker, fuller hair. The ingredients work together to support the health of your hair follicles and encourage natural growth. They’re vegan, cruelty-free, and free from artificial additives — true to Vegamour’s commitment to clean beauty. Results take a little time, but after about three months, you’ll likely start seeing a difference, with full effects showing up around the four-month mark. This gummy option is especially great if you’re not a fan of pills. Vegamour is also a B Corp, meaning they meet high standards for both social and environmental performance. They focus on using eco-friendly packaging and sustainably sourced ingredients, so you can feel good about what you’re putting in and on your body.
Our Editor’s Review | I’m kind of a gummy fanatic, so I looked forward to eating my little treat every day. Each vegan gummy contains biotin and folic acid, which combined have a powerful effect on your hair. Biotin strengthens the hair shaft and supports elasticity to prevent breakage, and folic acid (aka folate or B9) helps to treat deficiencies and is essential for proper cell growth and function. Vitamins B5, -6 and -12 support the body’s production of keratin and collagen, while vitamins A, C and E neutralize follicle-damaging free radicals. The gummies also contain zinc, which helps to balance and maintain scalp health. They say the gummies are strawberry-flavored, but it was a little peachier or even vaguely citrusy to me. In any case, fruity, light, and delicious! – Stephanie Fallon, Contributing Editor [Read our full review]
3. Nutrafol
Best For | Stress-related hair loss
Active Ingredients | Saw palmetto, biotin, ashwagandha
Daily Dose | 4 capsules
Price Starting At | $79/month
Nutrafol is a solid choice for anyone dealing with hair thinning or loss, tackling internal factors like stress, hormones, and inflammation. Their supplements combine ingredients like saw palmetto, biotin, and ashwagandha, all known to help balance hormones, reduce stress, and support healthy follicles. Together, these ingredients work to target the root causes of hair thinning, helping to promote natural growth and strength. What stands out about Nutrafol is their commitment to transparency and quality. They use third-party testing to make sure their products are pure and effective. And when it comes to sustainability, they’re on it — using responsibly sourced ingredients and eco-friendly packaging. Their products are also free from gluten and artificial additives, giving you a clean, natural option for hair care. Nutrafol’s science-backed approach has made it a go-to for people looking for a holistic, no-nonsense solution to hair loss. It’s a brand that takes both your hair and the planet seriously, offering a solution you can feel good about.
Customer Review | “My hair was thinning and shedding a lot so I researched products that would help with growth and healthiness, and I found Nutrafol.” – Teresa (Read more reviews)
4. Wellbel
Best For | Overall hair restoration
Active Ingredients | Vitamin D, biotin, collagen peptides
Daily Dose | 2 capsules
Price Starting At | $57/month
Wellbel’s hair supplements for women are all about getting your hair back to its healthiest self — starting from the inside out. Their carefully crafted blend of biotin, collagen peptides, and Vitamin D helps boost hair strength and volume. Biotin works to reduce breakage, collagen improves elasticity, and Vitamin D supports follicle regeneration, so your hair can grow stronger and healthier with time. What we love about Wellbel is that they keep things clean and simple — vegan, cruelty-free, and free from any unnecessary fillers. Their focus isn’t just on the performance of the ingredients, but also on making sure everything is ethically sourced and kind to the planet. They’ve got you covered with eco-friendly packaging, too, so you can feel good about the entire process. With regular use, Wellbel’s supplements can help you achieve thicker, healthier hair, without compromising on quality or sustainability.
Customer Review | “I have noticed such a difference in my hair over the last few months – Ive been taking wellbel since November. I have super thin hair and lately my hair has been looking and feeling so much fuller. Highly recommend!” – Giana M (Read more reviews)
5. Act+Acre
Best For | Scalp health
Active Ingredients | Biotin, Vitamin D, spirulina
Daily Dose | 1 capsule
Price Starting At | $55/month
Act+Acre takes a different approach to hair care by focusing on the scalp as the foundation for healthy hair. Their hair growth supplements are packed with biotin, spirulina, and Vitamin D to nourish and support the scalp, creating the perfect environment for your hair follicles to thrive. It’s all about giving your scalp the right care so your hair can grow stronger, healthier, and more vibrant. What’s great about Act+Acre is their commitment to purity — only using sustainably sourced, vegan ingredients, and keeping things cruelty-free. They also keep things clean, with eco-friendly packaging that minimizes their environmental impact. Plus, everything is third-party tested, so you can trust that you’re getting the highest-quality ingredients with every bottle. With Act+Acre, it’s not just about hair growth; it’s about supporting your hair’s health from the root up, all while staying true to clean beauty and sustainability.
Customer Review | “My hair has changed drastically since I began taking these vitamins. Menopause wreaked havoc on my hair. These hair vitamins brought me back to full hair and it’s not falling out like before. Best part is it’s a vegan product and it actually works!” – Rosie T (Read more reviews)
6. Moon Juice
Best For | Stress and beauty
Active Ingredients | Ashwagandha, biotin, collagen
Daily Dose | 2 capsules
Price Starting At | $54/month
The SuperHair supplements from Moon Juice blend a multivitamin with adaptogens and botanicals, offering a whole new way to support your hair’s health. Packed with Ashwagandha, biotin, and collagen, this formula works to reduce stress, promote growth, and improve overall hair quality. SuperHair is formulated with 10 bioavailable vitamins — like Vitamin A, C, D, and a full range of B vitamins — that address common nutrient gaps that can slow hair growth. Their “hair magic” includes ingredients like Saw Palmetto and Pumpkin Seed that help block DHT, a hormone tied to hair loss, while Horsetail provides silica for strength and thickness. Kelp, rich in iodine, supports thyroid function and hormonal balance, which are essential for healthy hair.
Customer Review | “I love this product. My hair and nails grow at an amazing rate. My nails are so strong when I take SuperHair consistently. I highly recommend.” – Stacy C (Read more reviews)
7. The Nue Co.
Best For | High-performance beauty
Active Ingredients | Zinc, biotin, MSM
Daily Dose | 2 capsules
Price Starting At | $65/month
The Nue Co. supplement Growth Phase takes a comprehensive approach to restoring hair health. This clinically proven supplement blends keratin, marine collagen, and elastin — three proteins that strengthen hair and improve its structure and flexibility. These ingredients work to support the health of hair follicles, reduce breakage, and promote healthier, fuller hair growth. Packed with all eight B vitamins, Growth Phase helps improve circulation and nutrient flow to the scalp, ensuring follicles are at peak health. Adaptogens like reishi mushroom and eleuthero root work to lower cortisol levels, addressing the stress that often contributes to thinning hair. Plus, iodine from kelp supports thyroid health, which is key for maintaining hormonal balance and optimal hair growth. With Growth Phase, you’re not just targeting hair thinning from one angle, you’re supporting your hair health from the inside out. In about 90 days, you may notice fuller, thicker hair, reflecting a more balanced, nourished scalp environment.
Customer Review | “My hair feels thick and healthy again for the first time in years.” – Grace M. (Read more reviews)
8. Codeage
Best For | Hair and nails
Active Ingredients | Biotin, vitamin C, collagen peptides
Daily Dose | 2 capsules
Price Starting At | $39.99/month
Codeage Hair Vitamins offers a powerhouse formula that tackles hair health from every angle. With over 40 ingredients, including biotin, marine collagen, keratin, and a potent multivitamin blend, this supplement nourishes your hair from root to end. Hyaluronic acid helps keep your scalp hydrated, while probiotics and omega-3 fatty acids support a balanced, healthy scalp environment. The formula also includes botanical extracts like Saw Palmetto, which supports hormone balance, and Ashwagandha and organic amla berry — adaptogens that help reduce stress, a common factor in thinning hair. All these ingredients work together to address the many factors that impact hair health. Designed for both men and women, regardless of hair type, Codeage Hair Vitamins go beyond just maintenance. They help nourish follicles, reduce breakage, and promote thicker, healthier hair over time.
Customer Review | “The only supplant that truly delivers like it’s supposed to.” – CrystalB (Read more reviews)
Featured image is from Prose
