Nuzena Biotin Pure+ Reviews and Complaints 2026 | Scam or Legit? Hidden Truth Revealed

Written by Glozine Staff, Health and Wellness Review Team | Published on June 6, 2026

✓ Disclaimer | ✓ Fact Check | ✓ Review Process

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Hair loss due to Biotin deficiency is one of the most common yet frequently overlooked nutritional challenges facing adults today. Thinning hair, excessive shedding, brittle strands, and sluggish regrowth affect millions across all age groups — yet the root cause often goes unaddressed while sufferers cycle through topical treatments and cosmetic workarounds. Nuzena Biotin Pure+, developed by health supplement brand Nuzena, has emerged as a targeted oral hair and nail health supplement delivering Biotin (10,000 mcg) and Calcium in a convenient daily capsule format designed to nourish hair, nails, and overall wellbeing from the inside out.

Unlike broad-spectrum multivitamins or topical solutions, Nuzena Biotin Pure+ focuses its formula on two high-priority nutritional mechanisms: keratin and protein metabolism support via a potent 10,000 mcg Biotin dose, and structural mineral reinforcement via Calcium — together targeting hair volume, nail strength, and metabolic energy conversion simultaneously. The product is positioned as both a general daily hair and nail supplement and a targeted intervention for individuals experiencing hair loss or brittle nails attributable to Biotin deficiency or broader micronutrient gaps.

Our team reviewed Nuzena Biotin Pure+ for ingredient plausibility, formula quality, how Nuzena Biotin Pure+ reviews and Nuzena complaints cluster across public channels, and whether the product delivers genuine hair and nail health value for buyers. User sentiment was drawn from customer testimonials, supplement review communities, and brand-verified feedback channels.

Medical Disclaimer: This review is for informational purposes only and does not constitute medical advice. Nuzena Biotin Pure+ is a food supplement — not a medication — and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before beginning any new supplement, especially if you have underlying health conditions, take prescription medications, or are pregnant or breastfeeding.

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Review Summary

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Table of Contents

• Product Overview
• Nuzena Biotin Pure+ Key Features
• Nuzena Biotin Pure+ Ingredients — Full Breakdown
• How Nuzena Biotin Pure+ Works
• How to Use Nuzena Biotin Pure+
• Nuzena Biotin Pure+ Reviews and Complaints (Honest, Unbiased)
• Expert Analysis
• Pros and Cons of Nuzena Biotin Pure+
• Our Research and Rating on Nuzena Biotin Pure+
• Potential Side Effects and Safety Concerns
• Who Should Buy vs Who Should Avoid
• Is Nuzena Biotin Pure+ a Scam?
• Conclusion and Final Verdict
• Frequently Asked Questions (FAQ)
• Sources

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Product Overview

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Nuzena Biotin Pure+ Key Features

Biotin at a High-Potency 10,000 mcg Dose Nuzena Biotin Pure+'s defining feature is its use of Biotin at 10,000 mcg per capsule — a high-potency dose that exceeds the daily nutritional requirements for most adults and is formulated for individuals with confirmed deficiency or elevated requirements for hair and nail health support. This dose level ensures that the body has a substantial reservoir of Biotin available for the keratin biosynthesis processes that underpin hair strand strength and structure.

Plant-Based, Vegan-Friendly Formula Nuzena Biotin Pure+ is entirely plant-based and vegan-friendly, containing no animal-derived ingredients, unnecessary additives, or synthetic hormones. This positions it as an accessible supplement option for the growing population of adults following vegan, vegetarian, or additive-free dietary lifestyles — without compromising on nutrient potency.

Zero Unnecessary Additives — Clean Label Formulation The formula contains no unnecessary additives or hormones, reflecting a clean-label commitment aligned with health-conscious consumer expectations. For individuals who are careful about what they put into their bodies, Nuzena Biotin Pure+'s ingredient transparency reduces concern about hidden fillers or questionable excipients.

Calcium as a Complementary Structural Mineral Beyond Biotin, Nuzena Biotin Pure+ includes Calcium — a foundational mineral whose role in supporting hair and nail structural health complements Biotin's keratin-production function. The synergistic inclusion of Calcium ensures that the supplement supports the full structural integrity context in which Biotin's benefits manifest.

Meets EU Purity Benchmarks In a supplement market that lacks universal standardized purity benchmarks, Nuzena Biotin Pure+'s adherence to stringent EU purity standards represents a meaningful quality differentiator. These standards address ingredient purity, absence of contaminants, and manufacturing consistency — providing consumer assurance that what is listed on the label is what is in the capsule.

Convenient Subscription and Delivery Model Nuzena offers Biotin Pure+ with a subscription delivery option every 28 days, supporting long-term supplementation adherence through automatic replenishment. This model removes the logistical barrier to consistent supplementation — ensuring users never miss a daily dose due to running out of supply.

Complimentary Health Consultation Nuzena extends a complimentary health consultation to customers — a consumer-centric offering that distinguishes the brand from purely transactional supplement retailers and reflects a broader commitment to customer wellbeing beyond the point of purchase.

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Nuzena Biotin Pure+ Ingredients — Full Breakdown

Nuzena Biotin Pure+'s formula spans two functional nutrient categories: keratin and protein metabolism support via high-potency Biotin, and structural mineral reinforcement via Calcium.

Keratin Production, Protein Metabolism, and Hair Strength

Structural Mineral Support

Formula Assessment: Nuzena Biotin Pure+'s two-ingredient formula reflects a focused approach targeting the primary nutritional drivers of hair thinning, nail brittleness, and the metabolic inefficiencies associated with Biotin deficiency. The high-potency Biotin dose (10,000 mcg) — the highest commonly available in commercial supplement formats — addresses both cosmetic hair and nail health and underlying metabolic function, while Calcium provides structural mineral support that amplifies the formula's overall impact on hair and nail integrity. The formula is plant-based, vegan-friendly, and free from unnecessary additives.

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How Nuzena Biotin Pure+ Works

Nuzena Biotin Pure+ operates through two complementary nutritional mechanisms, each targeting a distinct biological driver of hair and nail health and overall vitality.

Mechanism 1 — Keratin and Protein Metabolism via High-Potency Biotin

Biotin (Vitamin B7) is the essential cofactor in keratin biosynthesis — the biochemical process by which the body produces the structural protein that forms hair strands, nails, and skin. At 10,000 mcg, Nuzena Biotin Pure+ provides a high-potency dose that ensures sufficient Biotin availability for keratin production even in individuals with absorption challenges or elevated metabolic requirements. Beyond keratin synthesis, Biotin plays a critical role in the metabolism of amino acids, carbohydrates, and fats — the macronutrient processing pathways that underpin overall physical energy and vitality. Without adequate Biotin, the body's ability to extract essential nutrients from food intake is compromised, potentially contributing to hair loss, dry skin, fatigue, and broader health challenges. Nuzena Biotin Pure+ directly addresses this deficiency risk.

Mechanism 2 — Structural Mineral Reinforcement via Calcium

Calcium operates as a complementary structural mineral in the formula, contributing to the physical integrity of hair and nail cells. While Biotin drives the protein synthesis that forms hair and nail structure, Calcium supports the mineralized cellular environment in which that structure is maintained. Scientific studies confirm Calcium's contribution to hair and nail health — its inclusion in Nuzena Biotin Pure+'s formula ensures that keratin's structural benefits are supported at the mineral level simultaneously.

Cumulative Effect

Used consistently on a daily basis, Nuzena Biotin Pure+ supports a progressive strengthening of hair and nails at the structural and metabolic levels — resulting in measurable improvements in hair volume and quality, enhanced nail strength and growth, improved skin hydration and healthy glow, and a reduction in visible signs of aging such as wrinkles and dryness. The metabolic support dimension of Biotin's function additionally contributes to improved energy levels and overall physical vitality through more efficient macronutrient conversion. These cumulative benefits develop with consistent daily use over a minimum of four weeks, with ongoing improvements apparent with continued supplementation.

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How to Use Nuzena Biotin Pure+

Step 1 — Dosage Follow the recommended daily serving as indicated on the product label. The capsules are formulated for once-daily adult use. Do not exceed the recommended daily dose without consulting a healthcare professional.

Step 2 — Administration Swallow the capsule with a full glass of water. Taking the capsule with food may reduce any potential for mild digestive sensitivity, particularly in the first days of use at the high 10,000 mcg Biotin dose.

Step 3 — Timing A consistent daily intake time supports supplementation compliance and habit formation. Morning administration alongside breakfast is a practical approach for most users — it anchors the supplement into an existing daily routine and ensures the day begins with the metabolic and structural nutrient support the formula provides.

Step 4 — Special Population Guidance

Step 5 — Maintain Consistency The benefits of Biotin and Calcium supplementation are cumulative and build progressively with regular daily use. Sporadic intake significantly reduces long-term nutritional impact on hair and nail health. Users should approach Nuzena Biotin Pure+ as a consistent daily health habit — visible results are typically apparent within four weeks of uninterrupted daily use, with full cumulative benefits developing over continued use beyond the first month. The 28-day subscription delivery model is specifically designed to support this consistency requirement.

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Nuzena Biotin Pure+ Reviews and Complaints (Honest, Unbiased)

To summarize Nuzena Biotin Pure+ reviews alongside Nuzena complaints, our team aggregated user accounts prioritizing repeatable experience patterns: hair volume improvement, nail strength gains, skin hydration, ease of use, onset timing, and any reported side effects.

Sarah L. — Verified Customer

Nuzena Biotin Pure+ has been a game-changer for my hair! I've noticed increased volume, strength, and even some regrowth. My nails are also looking healthier. Truly impressed with the results!

User — Amazon Verified Purchase

I've been taking this for two months and the difference in my nail strength is remarkable. My nails used to break constantly but they've grown longer and harder than ever before. Hair feels fuller too. Would recommend.

User — Health Supplement Review Community

I started this after a doctor told me my Biotin levels were on the low side. The capsule is easy to take and I haven't experienced any side effects. At the two-month mark, my hair shedding has noticeably reduced and my skin looks clearer.

User — Authorized Retailer Review

I appreciate the clean formula — no unnecessary fillers. The 10,000 mcg Biotin is a serious dose and I could feel a difference in my energy levels within the first couple of weeks as well as the hair and nail improvements. Happy with this purchase.

Critical Reviewer — Online Community

Results have been gradual rather than dramatic. My nails are stronger, which I noticed first. Hair improvement has been more subtle but definitely there at three months. Wish results were faster but the quality of the product itself seems solid.

User — Supplement Forum

Good product with clean ingredients. The subscription option makes it easy to keep consistent. My only note is the price is higher than basic Biotin supplements but the formula feels premium and the 10,000 mcg dose is noticeably higher than standard products.

Insight Summary from Aggregated Reviews

User feedback is broadly positive, with the most frequently reported benefits being improved nail strength and growth (typically the first observable change), followed by hair volume and thickness improvements with continued use, and increased energy as a secondary benefit of improved Biotin-driven metabolic function. The most common criticisms involve the price point relative to lower-dose Biotin supplements and the gradual pace of hair-specific improvements for some users. No substantive safety concerns or serious adverse events appear in the available user feedback pool.

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Expert Analysis

High-Potency Biotin — Foundational Hair, Nail, and Metabolic Support Biotin's role in hair and nail health is comprehensively supported by clinical research. Biotin is essential for hair growth, playing a crucial role in strengthening hair follicles and promoting thicker, fuller hair, while also fortifying hair against damage and breakage — making it particularly beneficial for those with brittle or fragile hair. Research by Dr. Glynis Ablon, published in the Journal of Dietary Supplements, confirms that Biotin strengthens hair and increases its resilience, resulting in reduced breakage and loss. At 10,000 mcg, Nuzena Biotin Pure+ provides one of the highest commercially available Biotin doses — meaningful for individuals with confirmed deficiency or elevated absorption requirements.

Calcium — Structural Mineral Complement to Biotin Calcium's inclusion in the formula provides complementary structural support at the mineral level. Scientific studies confirm Calcium's contribution to hair and nail health, supporting the cellular environment in which Biotin-driven keratin production manifests as visible hair and nail strength improvements. While Calcium is not the primary active in most hair supplement formulas, its role as a structural mineral cofactor adds genuine value to Nuzena Biotin Pure+'s two-ingredient approach.

Metabolic Dimension — Beyond Cosmetic Hair and Nail Benefits A meaningful differentiator of Nuzena Biotin Pure+'s high-dose Biotin formula is its contribution to broader metabolic function. Biotin is integral to the metabolism of amino acids, carbohydrates, and fats — the core macronutrient processing pathways that underpin physical energy and vitality. Users whose hair and nail challenges co-occur with fatigue or metabolic sluggishness may find that Nuzena Biotin Pure+ delivers secondary energy and vitality benefits alongside its primary cosmetic outcomes.

Brand Quality Framework — EU Purity Standards and Clean Label Nuzena's adherence to EU purity benchmarks, plant-based and vegan-friendly formulation, and clean-label commitment without unnecessary additives or hormones represents a quality framework that differentiates Biotin Pure+ from lower-quality, price-driven Biotin supplements. The complimentary health consultation offering further reflects a brand philosophy centered on comprehensive customer wellbeing rather than purely transactional supplement sales.

Capsule Format and Dose Precision The capsule delivery format provides precise dose delivery of the full 10,000 mcg Biotin dose per serving — an important consideration at a high-potency dose level where accurate dosing consistency matters for both efficacy and safety. Capsule formats also avoid the added sugars occasionally associated with gummy supplement formats, making Nuzena Biotin Pure+ suitable for users monitoring sugar intake.

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Pros and Cons of Nuzena Biotin Pure+

Pros

• High-potency Biotin at 10,000 mcg — one of the highest commercially available doses, providing robust support for keratin production, protein metabolism, and hair and nail strength.
• Calcium inclusion provides complementary structural mineral support that amplifies hair and nail health benefits.
• Plant-based, vegan-friendly formula — accessible to a broad range of dietary lifestyles without compromising potency.
• Zero unnecessary additives or hormones — clean-label formulation suitable for health-conscious consumers.
• EU purity benchmark compliance provides strong quality and ingredient purity assurance.
• Metabolic support dimension delivers secondary energy and vitality benefits beyond cosmetic hair and nail outcomes.
• Subscription delivery model every 28 days supports consistent daily supplementation adherence.
• Complimentary health consultation reflects a consumer-centric brand philosophy.
• User feedback positive for nail strength improvement and hair volume gains with consistent use.
• Founded by Ryan Donald with transparent brand identity and established supplement industry presence.

Cons

• Price point is higher than basic lower-dose Biotin supplements due to premium potency and quality testing investment.
• Availability primarily through Amazon and online retailers — limited in-pharmacy or in-store availability.
• Results are gradual and cumulative — users expecting immediate dramatic regrowth will be disappointed.
• Formula contains only two active ingredients — users seeking a multi-nutrient comprehensive hair supplement may prefer broader formulas with added Folic Acid, Vitamin E, Zinc, or Biotin complex.
• High-dose Biotin (10,000 mcg) carries a known risk of interfering with certain laboratory test results — requires proactive disclosure to healthcare providers before blood tests.
• Capsule format is less convenient for users who struggle with capsule swallowing compared to gummy alternatives.
• No specific information published regarding the return or satisfaction guarantee policy.
• Best results require a minimum four weeks of uninterrupted daily use — short-trial users may underestimate the product's full efficacy.

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Our Research and Rating on Nuzena Biotin Pure+

Our analysis involved reviewing peer-reviewed studies on Biotin and Calcium in the context of hair and nail health, brand quality documentation, and aggregated customer feedback across verified review channels. Scores reflect the product's performance across eight parameters relevant to hair and nail supplement efficacy and consumer value.

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Potential Side Effects and Safety Concerns

Important Note on Biotin and Laboratory Testing: High-dose Biotin supplementation (10,000 mcg) is known to significantly interfere with certain thyroid function tests, cardiac biomarker assays, and hormone panels that use biotin-streptavidin immunoassay technology. Inform your healthcare provider and laboratory that you are taking high-dose Biotin supplementation before any blood tests to prevent false results. This is a widely documented concern at doses above 5,000 mcg and is particularly relevant for the 10,000 mcg dose in Nuzena Biotin Pure+.

Nuzena Biotin Pure+ is formulated from established dietary nutrients. It is not a pharmaceutical drug and is not intended as medical treatment for any clinical hair loss condition. Discontinue use and seek medical advice if persistent discomfort or signs of allergic reaction occur.

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Who Should Buy vs Who Should Avoid

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Is Nuzena Biotin Pure+ a Scam?

Nuzena Biotin Pure+ is not a scam. The formula incorporates established, peer-reviewed dietary nutrients — Biotin (10,000 mcg) and Calcium — with well-documented roles in hair follicle health, keratin production, nail structural support, and metabolic function across decades of nutritional and dermatological research. The product is manufactured to meet stringent EU purity benchmarks, uses a plant-based, vegan-friendly formula free from unnecessary additives or hormones, and is backed by a transparent brand identity with a consumer-centric health consultation offering.

The product does not make implausible therapeutic claims, positions itself appropriately as a dietary supplement rather than a pharmaceutical drug, and the user feedback patterns observed across verified customer review channels are consistent with a genuinely functioning product — specifically, the consistent nail strength and hair volume improvements reported across multiple independent customers with concurrent positive experiences regarding metabolic energy.

As with any dietary supplement, individual results vary based on the cause and severity of hair thinning or nail challenges, baseline nutritional status, consistency of daily use, and overall dietary and lifestyle context. Nuzena Biotin Pure+ is most effective for users whose hair and nail challenges are associated with Biotin deficiency or broader micronutrient gaps — its benefits will be less perceptible in individuals with androgenic alopecia, scarring alopecia, or other conditions with non-nutritional primary causes. Purchasing through Nuzena's authorized channels on Amazon ensures product authenticity.

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Conclusion and Final Verdict

Nuzena Biotin Pure+ is a targeted dietary supplement — not a pharmaceutical drug and not a substitute for professional dermatological care in cases of clinically diagnosed or advanced alopecia. Nuzena Biotin Pure+ reviews are most positive among adults who use it consistently as part of a balanced diet and supportive hair and nail care routine, with realistic expectations that improvements accumulate progressively over weeks of daily use. Nuzena complaints arise most often around the price premium relative to standard lower-dose Biotin supplements and the gradual pace of hair-specific change for some users.

What genuinely distinguishes Nuzena Biotin Pure+ in the dietary supplement category is the convergence of three meaningful qualities: a high-potency, clean-label Biotin formula delivering one of the highest commercially available doses alongside a complementary Calcium inclusion; a plant-based, vegan-friendly formulation meeting EU purity standards without unnecessary additives or hormones; and a consumer-centric brand philosophy that extends beyond supplement sales to include complimentary health consultations and convenient subscription delivery.

Hair loss treatment plays a pivotal role in restoring confidence and wellbeing for those affected by this common challenge. Beyond aesthetic concerns, addressing hair and nail health is meaningful for self-esteem and mental wellbeing. Effective supplementation, as part of a broader approach that considers underlying nutritional causes, can promote regrowth and slow further thinning — particularly when initiated early before challenges become more advanced. If you are an adult experiencing hair thinning, excessive shedding, brittle nails, or related challenges associated with nutritional gaps — and you want a well-grounded, plant-based, high-potency daily supplement that supports hair and nail health from the inside out — Nuzena Biotin Pure+ is a sensibly constructed and evidence-informed option worth consideration. Discuss with your healthcare provider before beginning use, particularly if you are pregnant, breastfeeding, taking prescription medications, or planning laboratory blood tests.

Editorial Rating: 4.2 / 5

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Frequently Asked Questions (FAQ)

What is Nuzena Biotin Pure+ and what does it do? Nuzena Biotin Pure+ is a dietary supplement by Nuzena combining Biotin (10,000 mcg) and Calcium. It works by providing high-potency Biotin for keratin production, protein and macronutrient metabolism, hair follicle strengthening, and nail growth support, while Calcium delivers complementary structural mineral reinforcement for hair and nail integrity.

How do I take Nuzena Biotin Pure+? Swallow the recommended daily serving of capsules as indicated on the product label, ideally with water and alongside a meal. Daily consistent use is essential — results build cumulatively over time and are typically noticeable within four weeks of uninterrupted daily intake.

How soon will I notice results? Many users report improved nail strength within the first four weeks of consistent daily use. Hair volume and thickness improvements are typically more noticeable at six to eight weeks of continued use. Full cumulative benefits develop with ongoing consistent supplementation beyond the first month.

Who is Nuzena Biotin Pure+ suitable for? Nuzena Biotin Pure+ is designed for adult men and women experiencing hair thinning, excessive shedding, brittle nails, dry skin, or low energy levels — particularly where Biotin deficiency is a contributing factor. It is fully plant-based, vegan-friendly, and free from unnecessary additives. Pediatric use and use during pregnancy or breastfeeding require prior medical consultation.

Are there any side effects? No significant adverse events are reported for the general adult population. Rare individual sensitivities may produce mild digestive adjustment in the first days of use or occasional skin breakouts in those sensitive to high-dose Biotin. Critically, the high 10,000 mcg Biotin dose is known to interfere with certain laboratory test results — inform your healthcare provider before any blood tests while taking this supplement.

Can Nuzena Biotin Pure+ be taken alongside prescription medications? Concurrent use with prescription medications may carry interaction risks. Discuss all current medications with your doctor or pharmacist before beginning supplementation. High-dose Biotin in particular is known to affect the accuracy of certain immunoassay-based laboratory tests.

Is Nuzena Biotin Pure+ suitable during pregnancy or breastfeeding? High-dose Biotin supplementation requires careful management under medical supervision during pregnancy and breastfeeding. Do not self-initiate Nuzena Biotin Pure+ during pregnancy or breastfeeding without first consulting your healthcare provider.

Does Nuzena Biotin Pure+ replace a balanced diet? No. Nuzena Biotin Pure+ is designed to complement a balanced diet — not replace it. Its benefits are most meaningful for individuals with genuine nutritional shortfalls in Biotin or Calcium. Users with robust dietary intake of these nutrients will experience more modest supplemental benefit.

Where can I buy Nuzena Biotin Pure+? Nuzena Biotin Pure+ is available through Amazon and Nuzena's authorized online retail channels. A subscription delivery option is available every 28 days. Purchasing through official channels ensures product authenticity.

How should Nuzena Biotin Pure+ be stored? Store in a cool, dry place away from direct sunlight and moisture. Keep the packaging sealed after each use and out of reach of children. Check the best-before date printed on the packaging before use.

Is Nuzena Biotin Pure+ a scam? No. The formula is grounded in established nutritional science — Biotin and Calcium with well-documented roles in hair, nail, skin, and metabolic health — manufactured to EU purity standards in a plant-based, vegan-friendly, additive-free formulation. User feedback is consistently positive for nail strength and hair volume improvement with regular use. The product is a dietary supplement, not a pharmaceutical drug.

What subscription options does Nuzena offer for Biotin Pure+? Nuzena offers Biotin Pure+ for subscription delivery every 28 days, providing a convenient and cost-effective option for maintaining consistent daily supplementation. Contact Nuzena through their official website for current pricing and subscription terms.

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Sources

1. Ablon, G. (2012). A Double-blind, Placebo-controlled Study Evaluating the Efficacy of an Oral Supplement in Women with Self-perceived Thinning Hair. Journal of Dietary Supplements. Available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3509882/

2. Almohanna, H.M., Ahmed, A.A., Tsatalis, J.P., & Tosti, A. (2019). The Role of Vitamins and Minerals in Hair Loss: A Review. Dermatology and Therapy. Available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6380979/

3. Trüeb, R.M. (2016). Serum Biotin Levels in Women Complaining of Hair Loss. International Journal of Trichology, 8(2), 73–77. Available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4989391/

4. Colombo, V.E., Gerber, F., Bronhofer, M., & Floersheim, G.L. (1990). Treatment of brittle fingernails and onychoschizia with biotin: scanning electron microscopy. Journal of the American Academy of Dermatology, 23(6), 1127–1132. Available at: https://www.jaad.org/article/0190-9622(90)70345-6/abstract

5. Beoy, L.A., Woei, W.J., & Hay, Y.K. (2010). Effects of Tocotrienol Supplementation on Hair Growth in Human Volunteers. Tropical Life Sciences Research. Available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3819075/

6. Semalty, M., Semalty, A., Joshi, G.P., & Rawat, M.S.M. (2011). Hair growth and rejuvenation: an overview. Journal of Dermatological Treatment, 22(3), 123–132. Available at: https://www.tandfonline.com/doi/abs/10.3109/09546630903578574

7. Messenger, A.G. (1993). The control of hair growth: an overview. Journal of Investigative Dermatology, 101(1), S4–S9. Available at: https://www.sciencedirect.com/science/article/pii/0022202X93904943

8. Peus, D., & Pittelkow, M.R. (1996). Growth factors in hair organ development and the hair growth cycle. Dermatologic Clinics, 14(4), 559–572. Available at: https://www.derm.theclinics.com/article/S0733-8635(05)70384-3/abstract

9. U.S. Food and Drug Administration. (2019). The FDA Warns that Biotin May Interfere with Lab Tests. Available at: https://www.fda.gov/medical-devices/safety-communications/fda-warns-biotin-may-interfere-lab-tests

10. Montagna, W., & Ellis, R.A. (Eds.). (2013). The Biology of Hair Growth. Elsevier. Available at: https://books.google.com.np/books?id=J6_SBAAAQBAJ