Yes, for skin hydration and elasticity. The effect is real but gradual. In a 2025 review that pooled seven separate randomized controlled trials, taking hyaluronic acid daily produced clear improvements in skin hydration, skin elasticity, and the depth of fine lines when measured against a placebo. [1] Most people take 60 to 120 mg a day and start noticing a difference somewhere between weeks six and twelve.
How does a capsule reach your skin?
Your gut bacteria break the hyaluronic acid down into pieces small enough to absorb. Hyaluronic acid is a very large molecule, so it can’t pass through your intestinal wall the way it arrives.
A 2016 study followed the whole journey. The hyaluronic acid passed through stomach acid and digestive juices intact. It then reached the bacteria living in the lower intestine, which broke it into much smaller fragments. Those fragments were absorbed and later turned up in tissues, including skin. [2]
That study was done in animals, so we treat it as the best available explanation rather than settled fact in humans. The human evidence sits on the outcome side instead. In a 2025 trial of 150 healthy adults, twelve weeks of daily hyaluronic acid increased skin hydration, elasticity, epidermal thickness, and dermal density. [3]
What the strongest studies found
The largest and most recent trial is also the most convincing one. In a 2025 randomized, double-blind, placebo-controlled study published in Scientific Reports, 150 healthy adults took 60 mg a day, 120 mg a day, or a placebo for twelve weeks. The 120 mg group came out ahead on facial skin hydration, elasticity, moisture retention, and the depth of lines around the eyes. Researchers also measured increases in the thickness and density of the skin itself. The 60 mg group improved in the same direction, more gently. [3]
Three earlier trials point the same way in very different groups of people. A 2017 study of 60 adults aged 22 to 59 measured crow’s feet using skin replicas and found a visible difference by week eight at 120 mg a day. [4] A 2014 set of placebo-controlled trials found that the same dose improved skin moisture in as little as two weeks. [5] And a 2025 trial in Spain found that 60 mg a day smoothed skin and softened lines in women aged 35 to 65 over twelve weeks. [6] Different skin types, different climates, and the same direction of results each time. That consistency is what makes this ingredient worth your money.
What “working” actually feels like
Most people describe it as skin that stops feeling tight an hour after they moisturize. Makeup sits better because there’s less flaking for it to catch on. Lines around the eyes look a little softer in the mirror than they did in the spring.
None of that is dramatic. These are changes that instruments detect confidently and a mirror detects subtly. If a brand promises you a transformation from a capsule, they’re selling something other than hyaluronic acid. Comfortable, hydrated skin that holds up better through a dry winter is a good outcome, and it’s the one the research actually supports.
Hydration and suppleness are where hyaluronic acid consistently delivers, so those are the changes to watch for. [1,3] If your main concern is pore size or uneven tone, a different ingredient is a better fit.
How long before you’d know?
Give it six weeks to change how your skin feels and eight to twelve weeks to change how it looks. The trials that tracked skin moisture found clear improvement by around week six. The ones measuring elasticity and fine lines generally saw differences from week eight, and twelve weeks is where most of these studies finish. [3,4,7] Individual results vary.
Our advice is to take it daily for a full twelve weeks before you decide. Two weeks isn’t a fair trial, and neither is remembering it four days out of seven. A 2015 study offers one reassuring detail here: skin moisture was still improved two weeks after participants stopped taking it altogether, so an occasional missed day won’t set you back. [7]
Who tends to see the most
People who start with dry skin have the most to gain. The trials with the fastest and largest results specifically recruited participants with dry skin, which makes sense, because there was more room for their skin to improve. [5,7]
Age matters less than you might expect. The 2017 study spanned ages 22 to 59 and found results across that whole range, while the 2025 Spanish trial focused on women aged 35 to 65. [4,6] If your skin runs dry and you fall somewhere in that window, you’re the person these studies were describing.
Why it might not seem to be working
Four things account for most cases, and none of them mean the ingredient is a dud.
It hasn’t been long enough. This is by far the most common reason. Week four feels like a long time when you’re checking the mirror every morning, but nearly every trial on this ingredient measured its first real difference somewhere between weeks six and twelve. [3,4]
You’re taking it most days rather than every day. Four days out of seven isn’t the protocol any of these studies used. Attaching it to a meal you never skip works better than relying on willpower.
Your dose is smaller than you think. If your hyaluronic acid comes inside a beauty blend, the actual amount may be a fraction of what the research used. Look for a milligram figure next to hyaluronic acid specifically on the supplement facts panel, not next to the name of a blend.
Something else is undoing the work. Very hot showers, dry indoor air in winter, and skipping sunscreen all pull moisture out of your skin faster than a capsule can put it back. A supplement supports a good routine but won’t override a difficult one.
What to pair it with
Hyaluronic acid works alongside everything else in a beauty routine, which makes it easy to add. Here’s what pairs naturally.
Your existing serum and moisturizer. Keep using them. Surface hydration and internal support do two different jobs, and you want both.
Collagen. Collagen provides the structure and hyaluronic acid holds the moisture around it. Take each one for its own benefit rather than expecting them to multiply. Our guide to collagen and hyaluronic acid explains what the research found when someone tested that combination directly.
Vitamin C. Your body needs vitamin C to build collagen normally, and it’s already included in several of our formulas. [8]
A humidifier. It isn’t a supplement, but if your skin turns tight every January, a humidifier in the bedroom will do more than most bottles.
Getting the most out of it
Three habits separate a supplement that works from one that sits in your cupboard.
- Take the hyaluronic acid supplement at the same time every day, with food and water. Attach it to a meal you never skip.
- Keep your serum and moisturizer exactly as they are. A capsule supports hydration from within and doesn’t replace surface care.
- Take a photo in good light on day one. Gradual change is difficult to see day to day, and a photo is more reliable than memory.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Keep reading
- Hyaluronic acid supplements: a complete guide
- How much hyaluronic acid should you take a day?
- Supplement or serum? Oral vs. topical hyaluronic acid
- Hyaluronic acid side effects and safety
Twelve weeks only works if the habit sticks. Hyaluronic Acid Capsules give you 200 mg of low molecular weight hyaluronic acid in one capsule a day.
