Reunoa vs Dermara: how the two bruise products compare
By Margaret Hale, Reunoa EditorialLast updated
The short answer
Reunoa and Dermara use a similar ingredient approach: arnica, vitamin K and barrier support (Reunoa: ceramides and niacinamide; Dermara: ceramide NP and niacinamide, per its product page). Reunoa states 15% arnica and is a light serum; we couldn't find Dermara's arnica percentage published. Neither product has a published clinical trial. Compare stated strengths, texture, guarantee terms and how each describes results.
Key takeaways
- Both list arnica, vitamin K and barrier ingredients [1] [2].
- Reunoa states 15% arnica; we didn't find Dermara's arnica percentage published.
- 20% arnica beat placebo in a bruise trial — stated strength matters [3].
- Neither product has a published clinical trial of the finished formula.
- Treat result percentages and testimonials on sales pages with care unless the study is described.
On this page
Side by side
| Reunoa Bruise Defense & Repair Serum | Dermara | |
|---|---|---|
| Format | Light serum [1] | Cream (jar) [2] |
| Arnica | 15% stated | Arnica montana listed; % not found |
| Vitamin K | Yes | Vitamin K1 listed |
| Barrier | Ceramides, niacinamide | Ceramide NP, niacinamide |
| Retinoids / acids | None | Not listed on the page we reviewed |
| Fragrance | Fragrance-free | Check current label |
| Guarantee | Money-back, per store policy [6] | 60-day refund guarantee, per product page [2] |
| Where sold | reunoa.com | Its own site |
Formulas and offers change — always check the current pages.
What the evidence says about the shared ingredients
- Arnica: 20% arnica ointment helped laser-induced bruises fade faster than placebo [3]. A stated percentage tells you how close a product is to what was tested.
- Vitamin K: reduced bruise severity applied after laser treatment [4].
- Ceramides: barrier lipids improved barrier function in a trial [5].
Neither Reunoa nor Dermara has published a clinical trial of its finished product, as far as we know.
How to read claims on any bruise-product page — including ours
Sales pages in this category often show result percentages ("92% saw reduced bruising"), countdown timers, low-stock warnings and short testimonials. Useful questions:
- Who ran the study, how many people, for how long, compared to what? If that isn't stated, treat the percentage as marketing.
- Is it a cosmetic claim or a medical one? Cosmetics may claim to improve appearance, not to treat a condition [7].
- Are testimonials verifiable? Named, dated reviews on an independent platform carry more weight than unattributed quotes.
- Is "safe with blood thinners" explained? Topicals on unbroken skin don't change how blood thinners work, but on warfarin, vitamin K products are worth checking with your clinic.
We hold ourselves to the same standard: we don't publish result percentages without a described study, and we don't add review stars to search results.
Which might suit you?
| Choose… | If you… |
|---|---|
| Reunoa | want a stated 15% arnica, a light serum for twice-daily use under sleeves, and no retinoids or acids |
| Dermara | prefer a cream texture and its offer terms suit you |
| Either | patch-test first, use twice daily, and give it a few weeks |
Frequently asked questions
Is Reunoa the same as Dermara?
No. They're different products from different companies, with a similar ingredient approach. Reunoa is sold only at reunoa.com.
Which is better, Reunoa or Dermara?
Neither has a published head-to-head or clinical trial. Compare stated ingredient strengths, texture, guarantee and how you tolerate each.
Does Dermara state its arnica percentage?
We didn't find an arnica percentage on the product page we reviewed. Reunoa states 15%.
Are both safe with blood thinners?
Both are topical products for unbroken skin, which don't change how blood thinners work. On warfarin, ask your clinic about vitamin K-containing products.
Sources
- Reunoa — official store (product information, FAQ, guarantee) — reunoa.com.
- Dermara bruise repair cream — product page (ingredients: arnica, vitamin K1, ceramide NP, niacinamide) — trydermara.com.
- 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
- 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
- Reunoa refund policy — reunoa.com.
- Is It a Cosmetic, a Drug, or Both? (Or Is It Soap?) — U.S. Food and Drug Administration.
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.