A note before this article. This piece summarises published research on ozonated ingredients in dermatological contexts, including psoriasis. It is an educational summary of what researchers have studied, not a recommendation, not a treatment guide, and not a claim about Kōzōn products. Kōzōn products are cosmetics intended for topical use; they are not intended to diagnose, treat, cure, or prevent psoriasis or any other disease. Psoriasis is a medical condition that requires evaluation and ongoing care from a qualified healthcare provider. If you have psoriasis, your first call is your dermatologist, not a skincare brand's blog.
With that framing established, here's an honest summary of where the research sits as of 2026, for readers curious about the scientific context.
What Psoriasis Is (Briefly)
Psoriasis is a chronic, immune-mediated skin condition characterised by accelerated skin-cell turnover. Cells that normally take 28–30 days to mature and shed do so in 3–5 days, accumulating on the surface as raised plaques. The underlying driver is immune system activity — specifically overactive T-cells in the Th17 and Th1 pathways — not external barrier damage. It's a systemic condition with skin expression, not a topical condition with immune effects.
This matters for evaluating any topical research. A topical ingredient can affect local barrier, local hydration, local inflammation, or local bacterial load. It cannot meaningfully affect the systemic immune-signalling that actually drives psoriasis.
Standard-of-care treatment for psoriasis involves topical therapies (corticosteroids, calcipotriol, coal tar), phototherapy for moderate cases, and systemic therapies (methotrexate, biologics targeting IL-17 or IL-23 pathways) for moderate-to-severe cases. These treatments work because they address the immune-mediated biology.
What the Research on Ozonated Ingredients Has Explored
Ozonated glycerin specifically
As of 2026, no clinical trials of ozonated glycerin specifically for psoriasis have been published. Available research on ozonated glycerin focuses on:
- General topical tolerability (the 2022 RCT in Journal of Cosmetic Dermatology)
- Barrier-protein expression in 3D epidermal models (the 2026 NC State research)
- Antimicrobial behaviour in laboratory conditions
None of this research was designed to examine psoriasis endpoints. Any connection between these findings and psoriasis would be indirect mechanistic extrapolation — which is not the same as clinical evidence.
Broader ozone therapy research
Ozone therapy in dermatological contexts has a longer research history, most of which falls outside the cosmetic category entirely. A 2023 systematic review in the International Wound Journal and a 2022 review in PMC documented studies across multiple skin conditions. The general conclusion of these reviews: "evidence was promising but most studies were small, heterogeneous, and of limited methodological quality," and "larger-scale randomized controlled trials remain lacking."
For psoriasis specifically, proposed mechanisms in the broader literature have included modulation of cytokine profiles, oxidative stress / antioxidant pathway activation, and antimicrobial effects relevant to secondary infection risk on compromised psoriatic skin. These are hypotheses and mechanism discussions — not clinical outcomes.
It is important to note that most of this research examines ozone therapy in medical or clinical contexts, not cosmetic product use. The ozonated-glycerin cosmetic product category is distinct from dermatological ozone therapy as practised under medical supervision.
What Cosmetic Ingredients Can and Can't Do in the Context of Psoriasis
Within the cosmetic regulatory framework, topical products can:
- Support surface hydration
- Provide comfort for dry-feeling skin
- Help skin feel soft
- Leave a pleasant sensory experience
Within the cosmetic regulatory framework, topical products cannot:
- Treat, cure, or prevent psoriasis
- Claim to reduce, clear, or manage plaques
- Claim to modulate immune function
- Replace prescription treatment
- Claim equivalence or comparison with clinical treatments
Any cosmetic product making any of those claims is operating outside the legal boundaries of cosmetic marketing — regardless of whether the mechanism being referenced is biologically interesting.
What Someone with Psoriasis Should Actually Do
Work with a dermatologist. This applies whether psoriasis is mild, moderate, or severe. A dermatologist can:
- Confirm the diagnosis (a surprising number of "psoriasis" self-diagnoses are actually other conditions)
- Match treatment intensity to severity
- Monitor for psoriatic arthritis (joint involvement affects up to 30% of people with psoriasis and requires different management)
- Adjust treatment over time as the condition evolves
- Advise on what topical products are safe to layer alongside prescription treatment
If you're using a moisturiser or humectant (including ozonated glycerin) alongside a dermatologist-prescribed regimen, ask your dermatologist before adding it. Even well-tolerated ingredients can interact with prescription actives.
Where Cosmetic Ozonated Glycerin Fits — If It Fits at All
For people with psoriasis who have a dermatologist-supervised regimen and who want to add a lightweight humectant for general skincare use on non-affected skin, ozonated glycerin is a single-ingredient, fragrance-free, non-comedogenic option that's unlikely to introduce new triggers for reactive skin. That's the honest limit of what we can say.
It should not be applied:
- To active, inflamed, or broken plaques without dermatologist guidance
- As a substitute for prescribed treatments
- With any expectation of affecting the disease itself
For broader context on the ingredient, see our ozonated glycerin guide.
For skin that tends to feel dry and reactive but isn't diagnosed with a specific medical condition, see ozonated glycerin and dry, reactive skin.
The Bottom Line
The research on ozonated ingredients in dermatological contexts is interesting, ongoing, and largely outside the cosmetic product category. No clinical trial of ozonated glycerin specifically for psoriasis exists. Psoriasis is a medical condition that requires medical care, and no cosmetic product — Kōzōn's or anyone else's — can legally or truthfully claim to treat it.
If you have psoriasis, work with a dermatologist. The rest is context.
Disclaimer
Kōzōn products are cosmetics intended for topical use. They are not intended to diagnose, treat, cure, or prevent psoriasis or any other disease. Psoriasis is a medical condition requiring professional care. Do not replace prescribed treatments with any topical cosmetic product. Consult a qualified dermatologist for diagnosis and management.
Sources
- International Wound Journal — Ozone Therapy for Skin Diseases review (2023)
- PMC — Ozone Therapy for Dermatological Conditions, systematic review (2022)
- NC State University — Ozonized Glycerin research, Cosmetics, February 2026