Vitamin C, Explained: Skin, Immunity and Everyday Support

Vitamin C might be the most famous nutrient on the shelf. We reach for it at the first sniffle, we see it splashed across skincare, and most of us can name at least one food it's in. Yet for something so well known, it's surprisingly easy to misunderstand — and a little clarity goes a long way.

Here's a clear, UK-friendly guide to what vitamin C actually does and how to fit it into an everyday routine.

What vitamin C actually does

Vitamin C is a water-soluble vitamin with several well-established roles. It contributes to the normal function of the immune system, supports normal collagen formation for the normal function of skin, and helps protect cells from oxidative stress. It also helps increase iron absorption — a genuinely useful one to know if you're plant-based, since it can help your body make the most of the iron in your food.

That's a lot of jobs for one vitamin, which is part of why it turns up everywhere from beauty routines to winter wellness.

Why you need a steady supply

Here's the catch: unlike some nutrients, the human body can't make vitamin C or store much of it. That means we rely on a regular intake from our diet — it's very much a top-up-daily nutrient rather than a stock-up-once one.

The good news is that it's widely available in food. Citrus fruits, berries, peppers, broccoli and leafy greens are all good sources. For most people, a varied diet does a lot of the work — which is exactly why food should always come first.

The skin connection

Vitamin C's role in normal collagen formation is why it's such a fixture in the “beauty from within” conversation. Collagen is part of what keeps skin looking healthy, and vitamin C is one of the nutrients your body uses to form it normally. It also contributes to protecting cells from oxidative stress, which is why you'll spot it in so many glow-focused routines.

It's not a magic wand — no single nutrient is — but it's a meaningful, well-understood supporting player alongside the basics of sleep, hydration and sun protection.

Where a multivitamin fits

If your diet already includes plenty of fruit and veg, you may be getting a good amount of vitamin C without thinking about it. But life isn't always that tidy — busy weeks, fussy appetites and the occasional beige-food day happen to everyone. That's where a daily multivitamin can be a helpful safety net.

Our Multivitamin Gummies include vitamin C alongside a broad blend of everyday nutrients, in a zero-sugar, vegan format — so you're topping up several bases at once rather than juggling individual pots. It's a simple way to add a little consistency to a routine that doesn't always cooperate.

Frequently asked questions

Can I have too much vitamin C?

Because it's water-soluble, the body tends to pass what it doesn't use, but very high amounts can cause digestive upset. Stick to the amount stated on the pack and don't exceed it.

Is vitamin C from a gummy as good as from food?

Food should always come first for its wider benefits, but a supplement is a practical way to top up when your diet is inconsistent. Think of it as a safety net, not a replacement.

Does vitamin C really help with iron?

Vitamin C helps increase iron absorption, which is particularly handy on a plant-based diet. Pairing vitamin-C-rich foods with iron-rich meals is a simple, food-first way to benefit.

The takeaway

Vitamin C is a genuine everyday essential — involved in immunity, skin and iron absorption — and because your body doesn't store it, a steady daily intake is what counts. Get most of it from a colourful, varied diet, and use a multivitamin to smooth over the gaps. If you'd like an easy, zero-sugar option, our Multivitamin Gummies are a simple place to start, or browse the full vitamins collection.

Food supplements should not be used as a substitute for a varied, balanced diet and a healthy lifestyle.