Aging and years of sun exposure can lead to changes in skin texture, firmness, and hydration—along with increased brittleness of hair and nails. A randomized, double‑blind, placebo‑controlled study examined whether daily intake of choline‑stabilized orthosilicic acid (ch‑OSA), a bioavailable form of silicon, could help improve these age‑related changes in women with photodamaged skin. The results were encouraging, showing improvements in skin smoothness, connective‑tissue structure, and reduced brittleness of hair and nails.

What the Study Found

Fifty women with photodamaged facial skin took either ch‑OSA (10 mg silicon/day) or a placebo for 20 weeks. Researchers measured skin texture, hydration, barrier function, and mechanical properties, while participants rated hair and nail brittleness.

Compared to placebo, the ch‑OSA group experienced:

• Smoother skin texture — skin roughness decreased (Rt −16%, Rm −19%, Rz −8%), while it worsened in the placebo group.
• Improved skin firmness and elasticity — mechanical anisotropy improved, suggesting healthier connective‑tissue structure.
• Less brittle hair — participants reported lower hair brittleness scores.
• Stronger nails — nail brittleness scores improved significantly.

These improvements suggest that ch‑OSA may help support collagen‑rich tissues and keratin‑based structures—areas that commonly weaken with age.

Why Silicon Matters for Aging Skin

Silicon plays a role in the formation and maintenance of connective tissue. In laboratory and animal studies, orthosilicic acid has been shown to support collagen synthesis and improve dermal structure. In humans, ch‑OSA appears to help:

• support collagen production in the skin
• improve skin microrelief (smoothness)
• enhance elasticity and firmness
• strengthen hair and nails

For older adults, these benefits align with common concerns about thinning skin, reduced elasticity, and increased brittleness of hair and nails.

Comparison: Silicon vs. Other Skin‑Supporting Nutrients

How Seniors Can Use This Information

This study suggests that ch‑OSA may help improve visible signs of aging in the skin while also strengthening hair and nails. It’s a gentle, non‑drug option that fits well into a broader healthy‑aging routine. Benefits appear gradually over several months, making consistency important.

Safety Notes

Choline‑stabilized orthosilicic acid is generally well‑tolerated. As with any supplement, individuals with medical conditions or those taking medications should consult a clinician before starting.

Reference

The study is available here:
"Effect of oral intake of choline-stabilized orthosilicic acid on skin, nails and hair in women with photodamaged skin"