Best Biotin supplement for hair

Biotin, often referred to as Vitamin B7 or Vitamin H, is a water-soluble vitamin that is a part of the B-complex vitamin family. It plays a crucial role in helping the body convert food into energy and is known for its benefits to hair, skin, and nails. Specifically for hair health, biotin is essential as it contributes to the production of keratin, a protein that forms the basis of hair. A deficiency in biotin, although rare, can lead to hair thinning, loss of hair color, and brittle nails.

In recent years, the popularity of biotin supplements has surged, particularly among those looking to improve their hair’s health and appearance. This surge is likely due to growing awareness about the importance of nutrients for personal care and the increasing prevalence of hair-related concerns. Biotin supplements are now widely available and are often marketed for their ability to strengthen hair, enhance hair growth, and improve overall hair quality.

As a result, choosing the right biotin supplement has become an important consideration for many individuals seeking to enhance their hair health. With a wide range of products available, each promising significant benefits, it’s important to understand the different options and their specific features. This guide aims to provide a detailed overview of some of the best biotin supplements on the market, helping you make an informed choice for your hair care needs.

Top Biotin Supplements Reviewed

1. Nature Made Maximum Strength Biotin 5000 mcg Softgels

These softgels are known for supporting hair, skin, and nail health and enhancing energy metabolism. They are gluten-free and don’t contain artificial flavors or synthetic dyes. However, they may be susceptible to damage from heat or sunlight and require daily use with water and a meal​.


  • Supports hair, skin, and nail health.
  • Enhances energy metabolism.
  • Gluten-free, making it suitable for those with gluten sensitivities.


  • These softgels are sensitive to heat and sunlight, requiring careful storage.
  • Requires daily intake with water and a meal, which might not be convenient for all users​​.

2. NUTRAHARMONY Biotin with Hyaluronic Acid, Collagen & Keratin

This supplement combines biotin, collagen, and keratin, promoting thicker hair, glowing skin, and healthier nails. It is free from GMOs, gluten, and corn syrup. However, each bottle only contains a one-month supply, and some users might not see immediate results for hair improvement​.


  • Offers a potent blend of Biotin, Collagen, and Keratin, known for their beauty benefits.
  • Features a highly bioavailable formula for better nutrient absorption.
  • Free from GMOs, gluten, and corn syrup, catering to a wide range of dietary preferences.


  • Each bottle only offers a one-month supply, which could mean frequent repurchases.
  • Some users might experience delayed results.
  • There have been issues reported with the packaging​​.

3. Thorne Biotin 8 – Vitamin B7

This supplement is effective for improving hair thickness and nail strength. It contains pure, natural ingredients without gluten, GMOs, or artificial preservatives. Notably, it may take around 8 weeks of consistent use to see significant results, and some users may need an additional supplement for nail strength​.


  • Comprises pure, natural ingredients, ensuring high-quality content.
  • Free from gluten and GMOs, suitable for those with specific dietary restrictions.


  • Consistent use is necessary to see results.
  • Some individuals with weak nails might need additional supplements for optimal benefits​​.

4. NOW Biotin 5000mcg

This is an affordable option with a high dose of biotin. It is vegan, allergen-free, and tested for stability and potency. However, high doses of biotin can cause false lab results in certain tests.


  • Affordable, making it accessible to a wider audience.
  • Offers a high dose of biotin in each capsule.
  • Vegan and allergen-free, suitable for a variety of dietary needs.


  • High doses of biotin can interfere with certain lab test results.
  • The high daily value percentage of biotin may not be necessary for everyone​​.

5. Natrol Biotin Fast Dissolve 5,000 mcg

Ideal for those who don’t like taking pills, these quick-dissolve tablets are high in biotin and have a strawberry lemonade flavor. However, they are not gluten-free and contain some additives​.


  • Quick-dissolve formula for ease of use.
  • No need for water, convenient for on-the-go consumption.
  • Pleasant strawberry flavor.

How to Choose the Right Biotin Supplement

Choosing the right biotin supplement involves considering several factors that can influence its effectiveness and suitability for your needs. Here are some key aspects to consider:

1. Dosage

  • Importance of Dosage: The amount of biotin in a supplement can vary significantly. Common dosages range from 500 to 10,000 micrograms. It’s important to choose a dosage that aligns with your specific health goals.
  • Recommended Daily Intake: The recommended daily intake of biotin is generally low, around 30 micrograms for adults, but supplements often contain much higher doses, sometimes necessary for visible hair health improvements​​​​​​.

2. Ingredients

  • Additional Nutrients: Some biotin supplements include additional ingredients like collagen, keratin, or vitamins, which might offer added benefits for hair health.
  • Quality of Ingredients: Look for supplements that use high-quality, pure ingredients. Avoid unnecessary fillers and additives​​​​.

3. Allergen Information

  • Common Allergens: Check if the supplement is free from common allergens like gluten, soy, dairy, and nuts, especially if you have specific allergies or sensitivities.
  • Certifications: Look for certifications like gluten-free, non-GMO, or vegan if these are important for your dietary needs​​​​.

4. Form

  • Capsules vs. Gummies vs. Tablets: Biotin supplements come in various forms, including capsules, tablets, and gummies. Capsules and tablets are common, but gummies can be a good alternative for those who have difficulty swallowing pills.
  • Absorption: Consider the form that might offer the best absorption for you. For example, liquid or fast-dissolve forms might be absorbed more quickly​​.

5. Reading Labels and Understanding Supplement Facts

  • Label Information: Always read the label carefully. Look for the amount of biotin per serving and the number of servings in the bottle.
  • Supplement Facts: Check the supplement facts for any additional ingredients. Pay attention to the “% Daily Value” of biotin and other nutrients to ensure you’re not exceeding recommended limits.
  • Third-party Testing: Look for supplements that have undergone third-party testing for quality assurance. This ensures that the product meets certain standards of purity and potency.

6. Personal Needs and Preferences

  • Individual Health Goals: Your choice should align with your specific health goals, whether it’s improving hair strength, enhancing growth, or supporting overall hair health.
  • Consult Healthcare Providers: Before starting any new supplement, it’s advisable to consult with a healthcare provider, especially if you have existing health conditions or are taking other medications.

By considering these factors, you can make an informed decision about which biotin supplement is best suited for your hair health needs. Remember, what works for one person may not work for another, so it’s important to tailor your choice to your individual requirements and health profile.

Benefits and Potential Side Effects of Biotin

Biotin, also known as Vitamin B7, is widely recognized for its role in the health of hair, skin, and nails. It’s important to understand both its benefits and potential side effects to make informed decisions about supplementation.

Benefits of Biotin

  1. Hair Health: Biotin is often touted for its ability to strengthen hair and promote hair growth. It contributes to the production of keratin, a key protein that makes up hair, potentially leading to fuller, healthier-looking hair​​​​​​.
  2. Skin Health: Biotin plays a role in maintaining the health of the skin. It’s believed to support the skin’s barrier function, which can help in retaining moisture and protecting against irritants and environmental damage.
  3. Nail Strength: Biotin supplements are also commonly used for strengthening nails. People with brittle nails may find that biotin makes their nails stronger and less prone to splitting or breaking.

Potential Side Effects

  1. Allergic Reactions: Though rare, some individuals might experience allergic reactions to biotin supplements, including rashes, itching, or swelling.
  2. Interactions with Lab Tests: High doses of biotin can interfere with certain lab tests, leading to inaccurate results. This is particularly relevant for hormone or thyroid tests​​.
  3. Medication Interactions: Biotin may interact with certain medications. For instance, it can potentially affect the efficacy of anticonvulsant drugs. Always consult with a healthcare provider if you are on medication and considering biotin supplementation.
  4. Digestive Issues: In some cases, high doses of biotin can cause mild digestive issues, such as nausea or cramping.
  5. Acne: Some people report an increase in acne with high doses of biotin. This is not universally experienced and may depend on individual skin types and other factors.

While biotin is generally safe and beneficial for many people, it’s important to be aware of its potential side effects and interactions. The recommended daily intake is quite low, but supplements often contain much higher doses. If considering biotin supplementation, particularly in high doses, it’s advisable to consult with a healthcare provider to ensure it’s appropriate for your individual health situation and to avoid potential interactions with medications or lab tests. Remember, dietary supplements are not intended to diagnose, treat, cure, or prevent any disease and should be used as part of an overall healthy lifestyle.

FAQs on Biotin Supplementation

1. What is the recommended dosage for biotin supplements?

The recommended daily intake (RDI) for biotin is around 30 micrograms for adults. However, supplements often contain much higher doses, ranging from 500 to 10,000 micrograms. The higher doses are generally used for specific hair and nail health benefits. It’s important to follow the dosage instructions on the supplement label or consult a healthcare provider for personalized advice​​​​​​.

2. When is the best time to take biotin supplements?

Biotin can be taken at any time of the day, but it’s generally recommended to take it consistently at the same time each day for the best results. Some people prefer to take it with a meal to reduce the risk of stomach upset.

3. How long does it take to see results from biotin supplementation?

The time frame to see results from biotin supplementation can vary from person to person. Generally, it may take a few weeks to several months to notice improvements in hair strength, skin health, or nail growth. Consistency is key when taking biotin supplements for hair and nail health​​​​.

4. Can biotin supplements cause side effects?

While biotin is generally well-tolerated, some people may experience side effects such as allergic reactions, skin rashes, digestive upset, or changes in insulin release. High doses of biotin can also interfere with certain lab tests. It’s advisable to consult with a healthcare provider before starting a high-dose biotin supplement, especially if you have underlying health conditions or are taking other medications​​​​.

5. Is it safe to take biotin supplements with other medications?

Biotin supplements can interact with certain medications, such as anticonvulsants. If you are taking prescription medications, it’s important to consult with your healthcare provider before starting biotin supplementation to avoid potential interactions.

6. Can pregnant or breastfeeding women take biotin supplements?

Biotin is considered safe for pregnant or breastfeeding women, but it’s important to consult a healthcare provider before starting any supplementation. The provider can offer guidance on the appropriate dosage during pregnancy or breastfeeding.

7. Are there any foods that are natural sources of biotin?

Yes, biotin can be found in several foods, including eggs (especially egg yolks), nuts (such as almonds, peanuts, and walnuts), whole grains, meat (particularly liver), and certain vegetables like sweet potatoes and spinach.

8. Can a person overdose on biotin?

Biotin toxicity is rare, as it is a water-soluble vitamin and excess is excreted in urine. However, excessively high doses of biotin can lead to adverse effects and interfere with certain lab tests. It’s always best to stick to the recommended dosage or follow a healthcare provider’s guidance.

Remember, while biotin supplements can support hair, skin, and nail health, they should be part of a balanced diet and healthy lifestyle for the best results. If you have specific health concerns or conditions, it’s crucial to consult with a healthcare professional before starting any new supplement regimen.


In summary, biotin, a B-complex vitamin, plays a significant role in the health of hair, skin, and nails. Its supplements are increasingly popular for their potential benefits in strengthening hair, enhancing growth, and improving skin and nail health. When choosing a biotin supplement, it’s important to consider factors such as dosage, additional ingredients, allergen information, and the form of the supplement (capsule, gummy, etc.)​​​​​​.

The recommended dosage for biotin supplements varies, and it’s essential to follow the dosage instructions on the product label or consult with a healthcare provider. While biotin is generally safe, there can be side effects and interactions, especially with high doses or when combined with certain medications​​​​.

Remember, results from biotin supplementation can vary and might take several weeks to months to become noticeable. It’s also crucial to consider biotin as part of a balanced diet and overall healthy lifestyle for the best results.

Finally, before starting any new supplement, including biotin, it’s advisable to consult with a healthcare provider. This is especially important for individuals with underlying health conditions, those on medication, or pregnant and breastfeeding women, to ensure the supplement is safe and suitable for their specific needs.

Biotin supplements can be a valuable addition to your health regimen, but they should be used responsibly and in conjunction with professional medical advice.

Author: Dan Silvertown

Hello, I'm Dan Silvertown. I'm passionate about the world of grooming, style, and the art of barbering. As an author, I've had the privilege of writing articles for a virtual barbershop, sharing my insights, tips, and expertise on all things related to men's grooming and self-care.

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