Beauty vitamins — skin, hair and nails from within

"Beauty from within" has become a supplement-category heading in its own right. Most of what is sold under the label is overpriced protein powder in pastel packaging. What actually matters nutritionally for skin, hair and nails, and which of our products covers which part of the picture.

Beauty biology is nutrition biology

Your skin, hair and nails are the most metabolically demanding tissues on your body. Skin turns its outer layer over every 4-6 weeks. Hair follicles produce roughly a centimetre of keratin per month. Fingernails grow a few millimetres per month. Every one of those processes requires specific raw materials — amino acids, fatty acids, vitamins, minerals — delivered through circulation, built from what you eat.

Topical skincare can only do so much. It works at the surface. The raw material for new skin cells, new hair shafts, and new nail matrix is delivered from the inside.

The authorised-claim nutrient stack

The EU and UK health-claim register lists the specific nutrients with authorised claims for skin, hair, or nail function ^[1]. These are the ones worth focusing on.

Skin: - Vitamin A — contributes to the maintenance of normal skin. - Vitamin C — contributes to normal collagen formation for normal skin function. - Vitamin B2 (Riboflavin) — contributes to normal skin. - Vitamin B3 (Niacin) — contributes to normal skin and mucous membranes. - Biotin — contributes to maintenance of normal skin. - Iodine — contributes to normal skin. - Zinc — contributes to maintenance of normal skin. - Vitamin E — contributes to protection of cells from oxidative stress (relevant to UV-exposed skin).

Hair: - Biotin — contributes to maintenance of normal hair. - Zinc — contributes to maintenance of normal hair. - Selenium — contributes to maintenance of normal hair. - Copper — contributes to normal hair pigmentation.

Nails: - Zinc — contributes to maintenance of normal nails. - Selenium — contributes to maintenance of normal nails.

Collagen biochemistry (not a cosmetic claim directly, but biochemically central): - Vitamin C — contributes to normal collagen formation for the normal function of skin, bones, cartilage, teeth, gums, and blood vessels ^[1].

A reality-check on biotin specifically: a clinical review of biotin and hair concluded that supplementation only meaningfully improves hair where there is an underlying biotin deficiency or specific pathology, with no evidence supporting routine use in healthy people ^[2]. Biotin's place in a beauty stack rests on its authorised-claim status, not on a megadose effect.

How our four products cover the picture

Hi!Collagen — 10 g of marine Type I collagen peptides per scoop with added vitamin C. Amino acid building blocks plus the authorised vitamin C collagen-formation claim. The skin-aging, nail-strength, and connective-tissue angle.

LipidCell — squalane and ceramides with vitamins A and E. Vitamin A for the authorised "maintenance of normal skin" claim; vitamin E for the "protection of cells from oxidative stress" claim. The hydrolipid-barrier, dry-skin, mature-skin angle.

KeratinCell — biotin with MSM and AnaGain Nu. Biotin for the authorised "maintenance of normal hair" claim. The hair-specific angle.

Vitamin B-Complex — covers biotin, niacin, riboflavin and the whole B family ^[3]. The broad-spectrum beauty-nutrition base.

A sensible beauty-from-within routine

Not everyone needs everything. A practical stack by priority:

1. Protein first. Adequate daily protein is the single biggest lever for skin, hair and nail quality. Food handles this best — a collagen supplement tops up the specific collagen-amino-acid pool.
2. Omega-3 from diet or fish oil / algae. Skin barrier and inflammation context.
3. Hi!Collagen daily if you are over 35, post-partum, or menopausal. Before 35, food usually covers it.
4. LipidCell if your primary issue is skin dryness, sensitivity, or an ageing-barrier picture — this is where the inside-out lipid-and-vitamin-A-and-E combination earns its place.
5. KeratinCell if the visible issue is hair and nails specifically.
6. B-complex alongside any of the above — covers the wider vitamin family and sits behind the skin, mucous-membrane and hair claims for biotin, niacin and riboflavin.

The topical layer does not replace the nutritional layer

A practical reminder: a good skincare routine — gentle cleansing, moisturiser with ceramides or peptides, sunscreen every morning — is the topical half of skin quality. None of the supplements above substitutes for that. They do the half topical products cannot: deliver raw materials to the cells that are building tomorrow's skin, today.

Who should check with a doctor

• Sudden significant hair loss — investigate before supplementing.
• Unexplained skin changes — a dermatology conversation is quicker than guessing with supplements.
• Nail changes that look systemic (ridging, colour changes, shape changes) — can signal broader health questions.
• Pregnancy — check total vitamin A intake across supplements to stay within limits.

In practice

Beauty supplementation is really just targeted nutrition. Food-first, then fill specific gaps. Collagen peptides for the protein-building-block layer. Fat-soluble vitamins A and E with ceramides and squalane for the skin-barrier layer. Biotin and sulphur for the hair-specific layer. A solid B-complex underneath. Plus protein, omega-3, vitamin D through winter, and a decent skincare routine on the outside. Everything else is marketing.

References

1. European Commission. EU Register of Nutrition and Health Claims Made on Foods. ec.europa.eu
2. Patel DP, Swink SM, Castelo-Soccio L. A Review of the Use of Biotin for Hair Loss. Skin Appendage Disord. 2017;3(3):166–169. PubMed: 28879195
3. NHS. B vitamins and folic acid. nhs.uk

---