Biotin-8 helps your hair, skin and nails with a strong potency dietary supplement, and it supports keratin strength for a healthier you.

Biotin is the star ingredient behind those benefits, and Thorne backs it with NSF Certified for Sport accreditation and strict cGMP manufacturing.

This heritage of quality means a daily dietary supplement you can truly trust.

Available Sizes & Variants:

60 Veggie Caps – High potency biotin for hair, nails and skin support.

Benefits & Features:

• Nails stay firmer and less prone to splitting, thanks to the star ingredient.
• Hair growth support and skin radiance come from keratin related effects.
• Supports energy metabolism and nerve function, helping you feel steadier throughout the day.
• Gluten free and allergy friendly, suitable for many diets.
• Biotin supplements for hair growth support energy production and metabolism, helping everyday tasks feel easier while promoting healthier nails, hair and skin.

Thorne Biotin-8 is part of a heritage of quality, produced in facilities that meet good manufacturing practices and audits. The star ingredient, biotin, is delivered in a high potency dose designed for keratin support and energy metabolism, and the gluten free formula makes it accessible to many. Research in dermatology shows biotin can support nails and energy production at higher daily intakes, while experts note benefits for hair growth, skin tone and nerve function. Thorne’s NSF for Sport accreditation and extending to their plant based protein powders, underscoring the dietary supplement’s trusted credentials, quickly absorbed and not leaving you greasy.

Biotin, Microcrystalline Cellulose, Hypromellose (derived from cellulose) capsule, Calcium Laurate, Silicon Dioxide.

• GTIN: 693749118022
• Manufacturer: Thorne
• Categories: Beauty SupplementsBest SellersBiotin Vitamin B7 Supplements & TabletsNail Strengtheners & Nail TreatmentsNew ArrivalsPopular Supplement BrandsSubscribe & Save ProductsThorne Supplements
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take 1 capsule once or twice daily, or as directed by your healthcare professional. Take 1/4 level teaspoon daily.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Biotin (Vitamin B7)

Biotin is a water‑soluble B vitamin that acts as a cofactor in key metabolic reactions essential for energy production and keratin health. This product offers a high‑potency biotin to support normal metabolic function.

This ingredient is supplied as biotin in a capsule form and is presented as a standalone nutrient, with the emphasis on its role in energy metabolism and keratin structure. Other ingredients support capsule integrity and manufacturing quality.

What Does Biotin Do?

Biotin contributes to normal energy production and glucose metabolism, and is involved in maintaining healthy hair, skin, and nails in line with EFSA-aligned principles and research findings.

Scientific research suggests that biotin supports these normal physiological functions through its role as a cofactor in cellular energy processes and keratin-related health, as described by researchers at recognised universities.

This product is not intended to diagnose, treat, cure, or prevent any disease.

Why Thorne Biotin-8 is Welzo Selected

Thorne stands out in the market for its commitment to purity, potency, and manufacturing excellence. This brand has earned a strong reputation for high‑quality tiers of production and a history of rigorous quality practices, including adherence to cGMP standards and regular third‑party testing. Thorne also holds NSF Certified for Sport accreditation for selected products, underscoring a recognised level of independent quality assurance that resonates with Welzo’s safety and transparency ethos. These factors positioned Thorne as a trusted partner in our supplier network and reinforced our confidence in their consistency and reliability.

Thorne Biotin-8 is a high‑potency formulation designed to support keratin infrastructure with a clear, transparent ingredient and label philosophy. The product is gluten‑free and manufactured with rigorous QA protocols, including ingredient sourcing and potency verification, aligning with our commitment to robust quality control. We stock Thorne because our expert team of doctors, nurses, and nutritionists our expert team of doctors, nurses, and nutritionists recognise their disciplined approach to supplement integrity, supported by our supplement quality standards.