✨ Skin, Hair and Nails: Silicon, Biotin, Collagen and Hyaluronic Acid
Which nutrients support beauty and tissue health
Skin, hair and nails are among the first indicators of health. Their support requires a range of nutrients: silicon (for collagen), biotin, collagen and hyaluronic acid. We break down the role of each.
Why it matters
Skin, hair and nails renew constantly and require protein and micronutrients. Deficiency can appear as dryness, brittleness, hair loss and flaking nails. A nutrient balance is the basis of their health.
- Skin renews in about 28 days.
- Hair and nails grow from keratin.
- Protein, vitamins and minerals are needed.
- Deficiency shows on skin and hair.
Silicon
Silicon participates in collagen and elastin synthesis, supporting skin elasticity and the strength of hair and nails. Its bioavailable forms (e.g. choline-stabilised silicon, ch-OSA) are used in supplements.
- Participates in collagen synthesis.
- Supports skin elasticity.
- Strengthens hair and nails.
- The ch-OSA form absorbs better.
Biotin
Biotin (B7) is a water-soluble vitamin involved in keratin metabolism. It is often used in hair and nail supplements, although biotin deficiency is rare. High doses affect lab results.
- Participates in keratin metabolism.
- Supports hair and nails.
- Deficiency is rare.
- High doses distort tests.
Collagen
Collagen is the main structural protein of the skin. Its synthesis declines with age. Hydrolysed collagen and collagen peptides are studied for supporting skin, hair and nails.
- Main skin protein.
- Synthesis declines with age.
- Peptides studied for skin.
- Supports elasticity.
Hyaluronic acid
Hyaluronic acid is a component of the extracellular matrix that retains moisture in the skin. Oral use is studied for hydrating the skin from within.
- Retains moisture in the skin.
- Component of the extracellular matrix.
- Oral use studied for the skin.
- Supports hydration.
Food: sources
| Nutrient | Food | Content | Comment |
|---|---|---|---|
| Silicon | Bamboo, oats, vegetables | Depends on soil | Bamboo is rich |
| Biotin | Eggs, liver, nuts | ~20 mcg/100 g | Yolk is rich |
| Collagen | Bone broth, aspic | From connective tissue | Collagen peptides |
How much to eat
- Biotin (norm 30 mcg): 1–2 eggs + nuts + liver 1–2 times a week.
- Silicon: oatmeal, vegetables, whole grains daily.
- Collagen: bone broth 2–3 times a week or peptides.
Norms and dosages
| Nutrient | Norm | Supplement dose | Comment |
|---|---|---|---|
| Biotin | 30 mcg/day | 2.5–5 mg | For hair/nails |
| Silicon | No strict RDA | 5–10 mg | ch-OSA |
| Collagen | From protein | 10 g | Peptides |
| Hyaluronic acid | From food | 120–240 mg | Hydration |
Why is silicon needed for the skin?
Silicon participates in collagen and elastin synthesis, supporting skin elasticity and hair and nail strength.
Does biotin help with hair loss?
Biotin supports keratin, but deficiency is rare; it helps with real deficiency.
Which collagen for the skin?
Collagen peptides (types I and III) are most studied for skin support.
Why hyaluronic acid?
It retains moisture in the skin; oral use is studied for hydration from within.
How much biotin to take?
In hair/nail supplements, usually 2.5–5 mg a day.
How fast is the result?
Changes are usually visible after 8–12 weeks of regular use.
Where is silicon in food?
Bamboo, oats, vegetables, whole grains.
Where is biotin in food?
Eggs (yolk), liver, nuts, soy.
Does biotin affect tests?
Yes, high biotin doses distort hormonal and thyroid test results.
What is best for nails?
Biotin and silicon are most studied for nail strengthening; protein is also needed.