BioSil ch-OSA (Hair, Skin & Nails) supports collagen generation for healthier hair, skin and nails, using the patented ch-OSA complex that boosts silicon delivery. The primary active ingredient, ch-OSA, is vegan and non-GMO, manufactured to high GMP standards, and backed by Natural Factors’ long standing commitment to purity. In simple terms, it supports your body's own collagen, elastin and keratin.

Available Sizes & Variants:

Vegetarian Capsules - vegan skincare friendly

Benefits & Features:

• Supports hair strength and thickness.
• Promotes skin elasticity, helping skin feel firmer and more youthful.
• Nails become stronger and less prone to brittleness, reducing splitting.
• Intended for daily skincare routines and long lasting confidence around friends.
• The star ingredient ch-OSA delivers silicon in a highly bioavailable form, supporting your body's natural collagen, elastin, and keratin production for visible, durable improvements over time.

BioSil ch-OSA sits at the heart of Natural Factors’ skincare story. This vegan skincare staple is built on a patented complex designed for optimal silicon delivery, helping your body make and maintain collagen, elastin and keratin. The brand’s GMP standards and transparent labelling give real peace of mind, and its vegan, non-GMO ingredients avoid common allergens. It’s genuinely reliable, and it fits into busy lives, quickly and easily becoming a quiet, everyday part of self care. It feels pretty impressive, too.

Choline (as ch-OSA®), Silicon (as Choline-Stabilized Orthosilicic Acid) (ch-OSA®)
Microcrystalline Cellulose, Purified Water, Capsule Shell consists of Hydroxypropyl MethylCellulose.

• GTIN: 5425010391866
• Manufacturer: Natural Factors
• Categories: Best Nail Care ProductsHair, Skin and Nails VitaminsNail Art & Nail Care ProductsNail Art StickersNail Art SuppliesNail HealthNailsNatural FactorsNew ArrivalsProfessional Nail Care 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 a day. 1-2 capsules with food\, unless otherwise directed by your healthcare professional.

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

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

Silicon, a trace mineral, is supplied in the choline-stabilised orthosilicic acid form, meant for enhanced bioavailability. This complex is vegan and non-GMO, and the product uses a plant-based capsule shell to deliver the ingredient in a bioavailable form.

This form is a patented ch-OSA complex created to optimise silicon delivery and support its role in connective tissue and hair, skin and nails health in vegan formulations.

What Does Silicon Do?

Silicon helps with normal functions linked to collagen and keratin synthesis, with evidence pointing to improvements in skin elasticity, nail strength and hair thickness in adults. Dr. Barel of University found that silicon-containing supplementation can positively influence skin properties when taken consistently.

EFSA-aligned research supports silicon’s involvement in maintaining normal connective tissue structure and function, contributing to daily vitality through its role in skin, hair and nails health.

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

Natural Factors is our go-to manufacturer for BioSil ch-OSA (Hair, Skin & Nails) because they bring a long-standing reputation for ingredient purity, regulatory compliance and customer trust. The brand’s commitment to top-notch manufacturing aligns with our expectations for reliable, science‑led supplements, and BioSil is widely regarded as the original, clinically backed silicon support. This heritage, combined with Natural Factors’ clear labelling, backs our confidence in selecting them as a partner for this product.

Our look at the brand on formal quality checks and third‑party validation, noting their GMP‑level manufacturing and focus on ingredient transparency. This is backed up by BioSil ch‑OSA’s patented delivery system, which supports silicon bioavailability and has been studied in clinical settings. To build trust, we highlight the brand’s well established position in both North America and Europe and its continuous focus on thorough research.

This brand‑product pairing is perfectly suited for a collagen‑generating, vegan, non‑GMO supplement. Our review process involved our medical experts evaluating production excellence and quality controls our quality certification process, and you can learn more about our team at our team of medical experts.