Does Reunoa work? Realistic expectations, from the people who make it
By Margaret Hale, Reunoa EditorialLast updated
The short answer
Reunoa's key ingredients have research behind them: 20% arnica and vitamin K creams helped bruises fade faster in controlled studies, and ceramides support the skin barrier. Reunoa itself hasn't been tested in a published clinical trial. Customers most often report that skin feels more hydrated quickly and bruises look less noticeable after one to two weeks of twice-daily use. It doesn't stop bruising caused by medicines.
Key takeaways
- 20% arnica beat placebo on laser bruises in a rater-blinded trial [1].
- Vitamin K reduced bruise severity applied after laser treatment [2].
- Ceramide-type lipids improved barrier function in a trial [4].
- No published clinical trial has tested the Reunoa serum itself.
- It's a cosmetic — it works on the skin, not in the blood [6].
On this page
What the research says about the ingredients
| Ingredient in Reunoa | What studies found | Limits |
|---|---|---|
| Arnica montana, 15% | 20% arnica ointment beat placebo on laser-induced bruises [1] | Volunteers 21–65, laser bruises; homeopathic arnica didn't work [3] |
| Vitamin K | Reduced bruise severity when applied after laser treatment [2] | Didn't prevent bruising applied only beforehand |
| Ceramides | Barrier lipids improved barrier function [4] | Not a bruise trial |
| Moisturizing base | Twice-daily moisturizing halved skin tears in aged care [5] | Different product |
Important: these studies tested ingredients, not Reunoa. We haven't published a clinical trial of the serum, and we won't invent results.
What customers typically tell us
From customer emails and store feedback, the most common positive comments are:
- skin feels more hydrated and smoother within days
- bruises look less noticeable after one to two weeks of twice-daily use
- the serum is light and absorbs fast, so it's easy to use under sleeves
The most common disappointments:
- expecting bruises to disappear in a day or two
- stopping after a few days
- not noticing the automatic-refill option at checkout
Read more, including complaints: Reunoa reviews.
A realistic timeline
| Time | What's realistic |
|---|---|
| Days 1–7 | Skin feels softer and more hydrated |
| Weeks 1–2 | Existing bruises may look less noticeable sooner than usual |
| Weeks 3–8 | With twice-daily use, many people find marks less prominent overall |
| Ongoing | New bruises still happen — continued use and protection help |
Results vary. Thin, sun-damaged skin and medicines keep causing new bruises, so it takes consistent use.
Who may see the least benefit
- people on high-dose blood thinners with very frequent bruising (the medicine is the main driver)
- people who use it occasionally rather than twice daily
- very large or deep bruises from falls
- anyone with an underlying medical cause — unexplained bruising should be checked by a doctor
What Reunoa can't do
- stop or reverse the effect of blood thinners
- cure senile purpura or reverse sun damage
- heal open wounds or skin tears (don't apply to broken skin)
- replace a medical check for unexplained bruising
How to get the best results
- Apply twice daily, morning and evening, to forearms, hands and shins.
- Use on clean, dry, unbroken skin; let it absorb about a minute.
- Add moisturizer on top if your skin is very dry, and sunscreen in the morning.
- Wear light long sleeves for chores.
- Give it at least two to four weeks.
Details: how to use Reunoa. If it doesn't suit you, see our guarantee [8].
Frequently asked questions
Does Reunoa really work?
Its key ingredients — arnica, vitamin K and ceramides — have supporting research, and many customers report bruises looking less noticeable within one to two weeks. The serum itself hasn't been tested in a published clinical trial.
How long does Reunoa take to work?
Skin often feels more hydrated within days. Most people judge bruise appearance after one to two weeks of twice-daily use; give it at least a month overall.
Does Reunoa work if I'm on blood thinners?
It can help the look of bruises and support thin skin, but it doesn't change how blood thinners work, so new bruises will still appear. Keep taking your medicine.
What if Reunoa doesn't work for me?
Orders from reunoa.com are covered by a money-back guarantee as described in the store's policy. Contact support@reunoa.com.
Sources
- Leu S, et al. Accelerated resolution of laser-induced bruising with topical 20% arnica: a rater-blinded randomized controlled trial. British Journal of Dermatology, 2010. PubMed 20412090
- Shah NS, et al. The effects of topical vitamin K on bruising after laser treatment. Journal of the American Academy of Dermatology, 2002. PubMed 12140470
- Kotlus BS, et al. Evaluation of homeopathic Arnica montana for ecchymosis after upper blepharoplasty: a placebo-controlled, randomized, double-blind study. Ophthalmic Plastic and Reconstructive Surgery, 2010. PubMed 20683279
- Andrew PV, et al. Topical supplementation with physiological lipids rebalances the stratum corneum ceramide profile and strengthens skin barrier function. British Journal of Dermatology, 2025. PubMed 40408261
- Carville K, et al. The effectiveness of a twice-daily skin-moisturising regimen for reducing the incidence of skin tears. International Wound Journal, 2014. PubMed 25040325
- Is It a Cosmetic, a Drug, or Both? (Or Is It Soap?) — U.S. Food and Drug Administration.
- Reunoa — official store (product information, FAQ, guarantee) — reunoa.com.
- Reunoa refund policy — reunoa.com.
General information, not medical advice. Written by the Reunoa editorial team; Reunoa makes Bruise Defense & Repair Serum. See our editorial policy for how we pick sources and keep product mentions fair.