Hyaluronic acid is the skin's main hydration molecule: it holds water in the dermis and gives skin its plumpness and bounce. We make less of it as we age, which is why hyaluronic acid supplements — capsules, tablets and drinks — have become one of the most searched-for skincare products in the UK. But can something you swallow really reach your skin?
What happens to oral hyaluronic acid?
Hyaluronic acid is a large molecule, and most of it is broken down into smaller fragments in the gut. Research suggests some of those fragments are absorbed and can act as signals that encourage the skin's own cells to produce more hyaluronic acid. In other words, oral supplements appear to work less by "delivering" hyaluronic acid to the skin and more by prompting the body to make its own.
That has led to two approaches. Most supplements contain hyaluronic acid itself, usually 120–240 mg a day. Others, like Hyalurox, provide the precursors and cofactors the body uses to build hyaluronic acid, together with nutrients that help protect it from breaking down.
What the evidence shows
Several small randomised, placebo-controlled trials — many of them from Japan — have reported improvements in skin moisture, and in some cases in fine lines and elasticity, after 8–12 weeks of oral hyaluronic acid. The studies are short and the effects modest, but they are consistent enough that oral hyaluronic acid is one of the better-supported "beauty supplements". It is not a substitute for sun protection or topical treatments; think of it as support from the inside.
Capsules, tablets or liquid?
The format matters much less than the formula, the daily dose and whether you take it every day. Capsules are easy to swallow and usually free of binders; tablets can carry a higher dose per unit; liquids and powders suit people who dislike pills. Check the label for the amount per daily dose rather than per capsule, and for what else is in it — many products add vitamin C, which the body needs to build collagen.
How to take a hyaluronic acid supplement
- Daily, with food and water. Hyalurox, for example, is four capsules a day; a 120-capsule pack is a 30-day course.
- For at least eight weeks before judging results — skin hydration changes gradually.
- Alongside topical hydration. A serum such as Hyalurox Serum works on the surface while the supplement works from within.
- With collagen support if firmness is your goal. Hyalurox can be combined with Colagenox oral collagen precursors.
Oral vs topical hyaluronic acid
Topical hyaluronic acid hydrates the outer layers of skin within minutes but cannot reach the deeper dermis. Oral supplements act more slowly but systemically — on the skin of the face and body, and on other tissues that rely on hyaluronic acid. Practitioners often recommend both, particularly after hyaluronic acid fillers or skin boosters, which is the idea behind the Hyalurox 360° kit (serum, cream and capsules).
Who are they for?
- People over 30 whose skin feels tight or looks less plump despite a good moisturiser.
- Dry, dehydrated skin in winter or in centrally heated homes and offices.
- Patients who want to support results after fillers, skin boosters or mesotherapy.
Is it safe?
Oral hyaluronic acid is generally well tolerated in studies. As with any supplement, speak to your doctor or pharmacist first if you are pregnant, breastfeeding, taking medication or managing a medical condition, and do not exceed the stated dose.
Frequently asked questions
How long does it take for hyaluronic acid supplements to work?
Most studies measure results at 8–12 weeks. Some people notice their skin feels more comfortable sooner.
Can I take hyaluronic acid and collagen together?
Yes. They work on different parts of the skin's structure and are often combined.
Do hyaluronic acid supplements help joints?
Hyaluronic acid is also found in joint fluid, and some people take it for that reason. If you have joint pain, see your GP rather than relying on a supplement.
Are hyaluronic acid supplements vegan?
It depends on the source. Most modern hyaluronic acid is made by fermentation rather than from animal tissue; check the label of the product you choose.
Shop the hydration edit, or read our complete guide to hyaluronic acid in aesthetic medicine.
