How much vitamin C does the skin need for collagen formation?

Ingredient spotlight · Vitamin C in Health Royals’ Beauty Complete · 7 min read

The reference intake for vitamin C on European labels is 80 mg a day, and the EU wording on normal collagen formation for the normal function of the skin applies when a product provides a meaningful share of it. Blood levels level off at a few hundred milligrams, so gram doses add little for the skin. Beauty Complete contains 60 mg a day as PureWay-C® from One Innovation Labs, a nutritional amount chosen to sit alongside food.

Vitamin C is one of the most familiar nutrients there is, associated with citrus fruit and winter colds. In a supplement built around the skin it has a more precise job, and that job is the reason it is there.

At Health Royals the question we ask about a vitamin is not how much fits in a capsule, but how much there is a reason for. For us, the dose matters as much as the raw material. Here we go through what vitamin C does, how it connects to collagen, how much you need, what PureWay-C® is, and why Beauty Complete contains 60 mg rather than a gram.

Collagen is part of the structure. Vitamin C is part of how that structure is built.

Vitamin C at Health Royals

Beauty Complete provides 60 mg vitamin C per daily dose, 75 percent of the nutrient reference value, as PureWay-C®, alongside 500 mg Cartidyss® fish cartilage collagen type II, 120 mg Hyabest® hyaluronic acid, 30 mg Ceramosides™ phytoceramides, 1.4 mg vitamin B2 and 50 µg biotin. Vitamin C contributes to normal collagen formation for the normal function of the skin.

See Beauty Complete, marine collagen and hyaluronic acid

What does vitamin C do in the body?

Vitamin C, ascorbic acid, is an essential water-soluble vitamin. Humans cannot produce it, so it has to come from the diet or a supplement.

Its established roles reach well beyond the immune system. Vitamin C contributes to normal collagen formation for the normal function of the skin. It contributes to the protection of cells from oxidative stress. It contributes to normal energy-yielding metabolism, to the reduction of tiredness and fatigue and to the normal function of the immune system. And it increases iron absorption, which matters most when much of the iron in the diet comes from plants.

Because collagen is found in far more than skin, vitamin C is also connected with the normal function of bones, cartilage, blood vessels, gums and teeth. It works alongside other nutrients: zinc also contributes to the protection of cells from oxidative stress, and olive polyphenols such as hydroxytyrosol are studied in the same area.

How are vitamin C and collagen connected?

Collagen is a structural protein found throughout the body, including the dermis. The body does not take protein from a meal and place it directly in the skin. It builds collagen in several steps, and vitamin C acts as a cofactor for the enzymes that stabilise the collagen structure as it is built.

That is why vitamin C and collagen have two different roles. A collagen ingredient supplies specific peptides and other naturally occurring components. Vitamin C supports the body's own normal collagen formation. In a well-considered skin supplement they sit side by side. What collagen is, and where the body uses it, we cover in what collagen is good for.

Collagen is also one of the tissues where time shows most clearly, which is why it comes up in conversations about healthy ageing and about the skin changes many women notice around menopause. Our menopause guide and guide to collagen supplements cover both.

One does not replace the other. Their roles are different, and they complement each other.

How much vitamin C do you need per day?

The nutrient reference value used on European labels is 80 mg a day. It is a labelling reference for the population rather than a personal target.

A varied diet supplies that amount without difficulty. Citrus fruit is the best-known source, but peppers, berries, broccoli, leafy greens and potatoes all contribute. What varies is the intake from day to day, since vitamin C is sensitive to storage and cooking. A supplement adds a steady, declared amount.

The upper end matters just as much. Blood levels of vitamin C level off at a few hundred milligrams a day, as the pharmacokinetic work by Levine and colleagues showed, so gram doses do not keep adding to what the skin has to work with.

This is how we arrived at 60 mg in Beauty Complete: 75 percent of the reference value, a clear nutritional contribution that sits together with the vitamin C in your food. It is enough for the authorised claim to apply, and there is no reason to go higher.

Which form of vitamin C is best?

Ascorbic acid is the established form and the most studied, so the question of form is less about replacing it than about what surrounds it.

Vitamin C is absorbed through the intestine, and that process is regulated rather than unlimited. At ordinary dietary and supplemental amounts it is efficient, but as single doses become much larger, the share absorbed falls and more is excreted in the urine. A very large number on a label therefore does not tell the whole story. Absorption into the blood, uptake into cells and how long levels remain are separate measurements, and a visible skin result is a different outcome again.

The delivery format belongs to the same discussion, which is why we have written about why we use capsules and not powders.

What is PureWay-C®, and who makes it?

PureWay-C® is a patented vitamin C complex developed by One Innovation Labs in the United States. The vitamin at its centre is still ascorbic acid. What distinguishes it is the matrix around it: a lipid-metabolite complex, part of the ingredient's delivery technology, together with citrus bioflavonoids, plant compounds found naturally in citrus fruit.

PureWay-C® has been examined in comparative research on absorption, cellular uptake and retention. In a laboratory study reported in the ingredient's technical materials, uptake was measured in a cell model, where PureWay-C® showed 233 percent greater cellular uptake than standard ascorbic acid.

The figure comes from cells rather than people, so it describes how the material behaved in the laboratory. What we do know is enough to make the choice: the vitamin inside is ascorbic acid, the form behind the authorised claims, delivered as a defined, documented raw material from a manufacturer that has studied its own matrix. Health Royals works with specialist manufacturers, researchers and supplier networks when raw materials are selected, as we explain in what a branded ingredient name guarantees.

Can you get too much vitamin C?

Vitamin C is water-soluble and not stored in large amounts, so much of a very high dose is excreted rather than used. Very high intakes are most often linked to digestive discomfort, and anyone taking medication should raise supplements with a qualified healthcare professional. The 60 mg in Beauty Complete sits well within everyday dietary amounts.

More is not automatically better, because the body decides how much it takes up.

How does vitamin C fit into Beauty Complete?

Beauty Complete was built around several connected parts of skin biology rather than one. It contains six ingredients, each with a reason to be there:

• Cartidyss® fish cartilage collagen type II, 500 mg, from Abyss Ingredients in Brittany (our article on Cartidyss®).
• Hyabest® hyaluronic acid, 120 mg, bio-fermented by Kewpie in Japan to a defined molecular weight, at the daily dose used in its human studies.
• Ceramosides™ phytoceramides, 30 mg, from Seppic in France, at the daily dose used in its human studies.
• Vitamin C, 60 mg, as PureWay-C®.
• Vitamin B2, 1.4 mg (our article on vitamin B2).
• Biotin, 50 µg (our article on biotin).

Cartidyss® was studied at 500 mg a day in a double-blind, placebo-controlled study in 46 women aged 45 to 59 over 90 days, published in Molecules in 2021, which reported reduced wrinkle measures and increased dermis thickness. Beauty Complete carries the same 500 mg.

The three vitamins sit at a nutritional level, and their authorised claims belong to the vitamins themselves. Vitamin C contributes to normal collagen formation for the normal function of the skin. Riboflavin contributes to the maintenance of normal skin. Biotin contributes to the maintenance of normal skin.

A skin supplement is taken every day for months, so the jar is designed to stand out on a shelf rather than disappear into a cupboard.

We have done the selection so that you do not have to. Beauty Complete gives you vitamin C as PureWay-C® at 60 mg a day, a dose set to sit alongside your food, in a supplement where each of the six ingredients has a reason to be there. Our skin page collects the wider context. You can stop looking.

See Beauty Complete, marine collagen and hyaluronic acid

Go deeper

• Guide: skin from within
• What is collagen good for
• Cartidyss®: the fish cartilage collagen in Beauty Complete
• Hyabest®: the hyaluronic acid in Beauty Complete
• Ceramosides™: the plant ceramide in Beauty Complete
• The biology of the skin
• Guide to collagen supplements
• Beauty Complete with PureWay-C® vitamin C

Frequently asked questions

What does vitamin C do for the skin?
Vitamin C contributes to normal collagen formation for the normal function of the skin, and to the protection of cells from oxidative stress.

How much vitamin C do I need per day?
The nutrient reference value on European labels is 80 mg a day, a labelling figure for the population rather than a personal target. A varied diet with citrus fruit, peppers, berries, broccoli and potatoes supplies it comfortably.

What does the 233 percent figure mean?
It is a laboratory measurement. In a cell model reported in the ingredient's technical materials, PureWay-C® showed 233 percent greater uptake of vitamin C into cells than standard ascorbic acid. It was measured in cells, not in people.

Why does Beauty Complete contain 60 mg of vitamin C?
A daily dose of two capsules provides 60 mg as PureWay-C®, 75 percent of the reference value: a clear nutritional contribution alongside food. Blood levels level off at a few hundred milligrams, so a gram dose would not give the skin more to work with.

References

National Institutes of Health, Office of Dietary Supplements. Vitamin C: Fact Sheet for Health Professionals.

EFSA Panel on Dietetic Products, Nutrition and Allergies. Scientific Opinion on Dietary Reference Values for vitamin C. EFSA Journal. 2013.

Levine, M.; et al. Vitamin C pharmacokinetics in healthy volunteers: Evidence for a recommended dietary allowance. PNAS. 1996;93(8):3704 to 3709.

Lykkesfeldt, J.; Tveden-Nyborg, P. The pharmacokinetics of vitamin C. Nutrients. 2019;11(10):2412.

Carr, A.C.; Maggini, S. Vitamin C and Immune Function. Nutrients. 2017;9(11):1211.

Pullar, J.M.; et al. The roles of vitamin C in skin health. Nutrients. 2017;9(8):866.

Peterkofsky, B. Ascorbate requirement for hydroxylation and secretion of procollagen. Am J Clin Nutr. 1991;54(6 Suppl):1135S to 1140S.

One Innovation Labs. PureWay-C® Reimagined Absorption: Proven Science That Still Leads Since 2007. Technical research material. 2025.

One Innovation Labs. PureWay-C® official ingredient and research information.

Important information

This article is intended for general information and educational purposes only and does not constitute medical advice. It summarises established nutrient functions, ingredient characteristics and manufacturer-provided research. Individual needs may vary. Consult a qualified healthcare professional with questions about supplementation, medication or personal health.