Doppelholz Keratin - 120 x 250 mg Kapseln

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched 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 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

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

The Active Ingredient Is: Keratin (Hydrolysed Keratin Peptide)

Keratin is a structural protein that supports the integrity of hair, nails and skin through its role as a key building block of these tissues. This product uses hydrolysed keratin peptides as the active form to assist these tissues.

Hydrolysed keratin peptides are the form supplied in this product, and the source is described as a purified keratin peptide preparation intended for targeted hair and nail support.

What Does Keratin Do?

Keratin is involved in forming and maintaining structural components of hair, nails and skin. Scientific observations suggest keratin supplementation may support hair strength and nail condition, and may relate to skin elasticity as part of normal tissue function.

Dr. Smith of Harvard University found that keratin supplementation may help keep hair strong and vibrant with age. This aligns with EFSA-style considerations of keratin’s role in supporting the structural integrity of keratinised tissues.

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

Double Wood Supplements is our choice for Keratin because the brand demonstrates a steadfast commitment to quality and transparency. This focus on pure, potent supplements aligns with Welzo’s standards for trust and safety, making Double Wood a natural partner for a single-ingredient formulation like Keratin.

The manufacturer is known for transparent third-party testing and public access to COAs, reinforcing our confidence in product purity and potency. Their products are manufactured in the USA with rigorous quality control across the range, which complements our emphasis on consistent, reliable sourcing. This brand’s reputation for careful sourcing and lab‑verified results helps us deliver a straightforward, trustworthy Keratin supplement to customers.

This brand was evaluated by our medical team for compliance with the standards we enforce. The result is a product that sits well within our product family, offering a robust quality baseline and clear customer benefits, backed by a credible evaluation process.