Hair, Skin & Nails: Which Ingredients Are Actually Authorised?
“Hair, skin and nails” supplements are a huge category — but if you read the labels closely, the headline ingredient is often not the one legally allowed to make the promise. Here is which ingredients actually carry authorised claims for hair, skin and nails, so you can judge any beauty formula on what is really doing the work.
The honest starting point: collagen can't claim it
Most beauty supplements lead with collagen or hyaluronic acid. Both are popular and widely used — but in Great Britain, neither collagen nor hyaluronic acid currently holds an authorised health claim. That means a compliant brand cannot legally tell you that collagen firms skin or thickens hair, however common those lines are online.
So where do the genuine, permitted claims come from? From specific vitamins and minerals that the better formulas include alongside the collagen. These are the ingredients quietly doing the authorised heavy lifting. You can check any of them yourself on the GB Nutrition and Health Claims Register.
The ingredients that actually carry hair, skin & nail claims
| Ingredient | Authorised role |
|---|---|
| Zinc | Contributes to the maintenance of normal hair, skin and nails — the only one of these that covers all three. |
| Biotin | Contributes to the maintenance of normal hair and normal skin. |
| Vitamin C | Contributes to normal collagen formation for the normal function of the skin. |
Notice the pattern: these claims belong to the named nutrient, not to the collagen. So a beauty supplement that pairs collagen with zinc, biotin and vitamin C is one where the supporting cast is what makes the authorised claims possible — and that is a sign of a thoughtfully built formula rather than a marketing-led one. (The NHS guide to zinc and other minerals is a useful plain reference on food sources.)
What to look for in a hair, skin & nails supplement
| What to look for | Why it matters |
|---|---|
| Named vitamins and minerals | Zinc, biotin and vitamin C are the ingredients that carry authorised hair, skin and nail claims. |
| Honest wording | A compliant brand won't claim collagen itself transforms your skin — be wary of those that do. |
| A format you'll keep up | Capsules, powders and drinks all work; consistency is what counts. |
| Dietary suitability | Check halal, vegetarian or other status if it matters to you. |
| Made to a recognised standard | GMP-certified manufacturing and clear UK labelling signal quality control. |
Where activGen Collagen Beauty fits in
Our Collagen Beauty (Hair, Skin & Nails) is a marine collagen complex with hyaluronic acid, and crucially it includes biotin, zinc and vitamin C — the nutrients that carry the authorised hair, skin and nail roles described above. It comes as 60 capsules at £17.99, GMP certified and made in the UK. If you prefer a drink format, our Marine Collagen – Glow & Renew powder is the companion product — and we cover collagen itself in more detail in our marine collagen guide.
Frequently asked questions
Do collagen supplements work for skin?
Collagen does not hold an authorised health claim in Great Britain, so a compliant brand cannot promise specific skin results from collagen. The authorised skin and hair roles in a beauty formula come from nutrients like zinc, biotin and vitamin C.
Which single nutrient covers hair, skin and nails?
Zinc is the one with an authorised claim spanning all three — it contributes to the maintenance of normal hair, skin and nails.
Is biotin worth taking for hair?
Biotin contributes to the maintenance of normal hair and normal skin, which is why it appears in beauty formulas. As always, it supports normal maintenance rather than promising dramatic change.
Capsule or drink — which is better?
Neither is inherently better; it comes down to what you will take consistently. Capsules are convenient; drinks suit people who dislike swallowing capsules.
activGen Collagen Beauty (Hair, Skin & Nails) is a marine collagen complex with hyaluronic acid, biotin, zinc and vitamin C — the nutrients that carry authorised hair, skin and nail roles. 60 capsules, GMP certified and made in the UK. See the product.
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This article is for general information and education only and is not medical advice. Food supplements are not a substitute for a varied, balanced diet and a healthy lifestyle. If you are pregnant, breastfeeding, taking medication or have a medical condition, speak to a qualified healthcare professional before starting a new supplement.