By Cosmetic Peat Editorial Team Updated June 2026
Fungal Skin Infections
Mostly preclinical, in-vitro, animal, or small exploratory human evidence.
Topical antifungals (clotrimazole, terbinafine), oral antifungals for severe cases
Dermatophyte and yeast infections of skin, scalp, or feet.
Peat may help through 1 documented mechanism: Antimicrobial Effects.
Fungal skin infections are among the most common infectious diseases on Earth — roughly one in four people is affected. Athlete’s foot, ringworm, candidal skin infections, and Malassezia-related conditions all fall in this category. They’re typically annoying rather than dangerous, but they’re stubborn — recurrence rates are high even after successful antifungal treatment.
Peat isn’t going to replace clotrimazole or terbinafine for an active infection. But it may play a role in two areas: supporting treatment of mild infections and — more practically — preventing recurrence by maintaining an environment that discourages fungal growth.
Why peat may help
Multiple antifungal compounds. Peat’s antimicrobial activity isn’t a single compound — it’s a cocktail. Humic acids, phenolic compounds, and tannins all contribute. Oxifulvic acid has demonstrated activity against Candida albicans in lab testing (van Rensburg 2000). A foundational study by Ansorg (1978) established that humic acid preparations have a broad antimicrobial spectrum that includes antifungal activity.
Acidic pH that fungi don’t like. Fungal skin infections thrive in neutral to slightly alkaline environments. Peat’s natural acidity (pH 3.5–5.5) creates a hostile environment for fungal growth. This is the same principle behind the acidic mantle that healthy skin maintains as a natural antifungal defence — and the reason why alkaline soaps can make fungal infections worse.
Breaking the recurrence cycle. This is where peat may be most practically useful. Fungal infections recur because spores persist in the skin environment after the active infection is treated. Regular use of peat-based products could maintain the acidic, antimicrobial environment that discourages recolonisation.
What the evidence says
The evidence is preliminary and largely lab-based. Antifungal activity of humic acid preparations has been demonstrated in vitro, but no clinical trial has tested peat for any specific fungal skin infection.
There’s indirect historical support: peat baths in European spa settings served populations where athlete’s foot and other skin infections were common, and the spa physicians who prescribed peat treatments observed reduced infection rates — though this was never formally studied.
The antimicrobial properties of peat are well-established across multiple studies. The question isn’t whether peat compounds are antifungal — they are. The question is whether a peat-based topical product delivers enough of these compounds at the right concentration to matter clinically. That remains untested.
Practical Options
The most relevant format for athlete's foot. Soak affected feet in peat-infused water to create an antifungal, acidic environment. Also addresses the dry, cracked skin that makes feet vulnerable to reinfection.
Daily antifungal cleansing of affected areas with pH-compatible compounds.
As maintenance after antifungal treatment to prevent recurrence. The sustained antimicrobial and pH-normalising effect may help keep fungi from re-establishing.
To be clear: use proper antifungal medication for active infections. Peat is a potential support and prevention measure, not a primary treatment. If a fungal infection persists or worsens, see a doctor.
How Does Peat Help?
The biological mechanisms through which peat addresses this condition.