BioSil ch-OSA Hair, Skin & Nails helps natural collagen production, a cornerstone of collagen supplements, and it helps your body build more elastin and keratin for healthier hair, skin and nails. The key active ingredient is ch-OSA, a silicon-based complex that activates your body's collagen production. Natural Factors backs BioSil with vegan, GMO-free sourcing and ingredient disclosure, so you know what you're getting.

Available Sizes & Variants:

60 Vegetarian Capsules – Vegan, allergen free capsules from Natural Factors

Benefits & Features:

• Supports natural collagen production for healthier hair and nails.
• Active ch-OSA helps protect existing collagen while boosting the body's own production.
• Fits daily into vegetarian skincare routines, complementing other wellness habits.
• Convenient capsules you can take with or without food, seamlessly.
• With a clean label approach that lists only active ch-OSA and minimal inactive ingredients, it stands out for transparency and quality you can trust today.

BioSil stands out among hair nails and skin vitamins, with a singular active ingredient, ch-OSA, designed to prompt your body to generate its own collagen, elastin and keratin. The vegan capsule shell and allergen-free formula reflect Natural Factors' commitment to quality. In trials, elasticity improved, wrinkles eased, hair thickened and nails strengthened, offering a comprehensive triple protein support for hair, skin and nails from within.

(other) Microcrystalline cellulose, purified water, capsule shell consists of hydroxypropyl methylcellulose.

• GTIN: 5425010391835
• Manufacturer: Natural Factors
• Categories: Best Nail Care ProductsBest SellersHair, Skin and Nails VitaminsNail Art & Nail Care ProductsNail Art SuppliesNail Health SupplementsNail Strengtheners & Nail TreatmentsNatural FactorsNew ArrivalsProfessional Nail Care ProductsSubscribe & Save Products
• 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 one capsule twice daily.

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

The Active Ingredient Is: Silicon (as choline-stabilised orthosilicic acid)

Silicon is a trace mineral involved in supporting the body's natural structural proteins and connective tissues. In this formulation, silicon is provided as choline-stabilised orthosilicic acid, a bioavailable form used to support the body's collagen-related processes.

The primary ingredient combination reflects silicon with choline-stabilised orthosilicic acid as the active component, designed to activate endogenous collagen production and support elastin and keratin formation. This product is vegan and free from common allergens.

What Does Silicon Do?

Silicon participates in normal formation of connective tissues, supporting collagen-related processes and the maintenance of skin, hair, and nails as part of healthy tissue development. In the context of this formula, it helps support the body’s natural collagen production and related protein networks.

EFSA-aligned understanding notes that silicon-containing formulations contribute to these structural roles in the body, with emphasis on bioavailable forms such as ch-OSA used in this product.

BioSil is our picked brand for this ch-OSA Hair, Skin & Nails supplement thanks to a long-standing commitment to openness and vegan, allergen-free formulations. BioSil’s emphasis on full ingredient disclosure and its stance as a plant-based, GMO-free option align with Welzo’s standards for purity and safety in everyday wellbeing.

This brand stands out for its focused formulation approach and recognised product integrity. BioSil lists ch-OSA as the sole active ingredient, with clear, straightforward ingredients and no artificial colours, preservatives, or fillers, strengths that align with our quality criteria. Their focus on vegan and allergen-free sourcing further reinforces trust in the manufacturing philosophy we hold dear.

Product-specific, BioSil’s ch-OSA complex is designed to activate the body’s natural collagen-related proteins, with clinically studied dosing that supports daily silicon and choline intake. The documented outcomes in skin elasticity and other measures reflect a solid clinical foundation for this category. Our evaluation was boosted by our expert team of doctors, nurses, and nutritionists and by reviewing how we verify ingredient quality as part of Welzo’s vetting process.

Ultimately, BioSil’s heritage of formulation discipline and its proven product framework make it a natural fit for this supplement, and our team picked them for their demonstrated quality standards and transparent, science-led approach.