Psoriasis

Psoriasis is a chronic, immune-mediated inflammatory condition characterised by accelerated epidermal turnover. Keratinocytes proliferate far faster than normal, leading to the accumulation of immature skin cells at the surface. The result is the raised, silvery-scaled plaques that are the hallmark of plaque psoriasis — the most common form.

How peat may help

Peat-based treatments approach psoriasis through two complementary mechanisms:

Anti-inflammatory action. The humic acids in therapeutic peat inhibit key inflammatory mediators — prostaglandins, TNF-α, and IL-1β — involved in the psoriatic inflammatory cascade. This is a gentler, more superficial anti-inflammatory action than systemic therapies, but it may reduce redness and irritation and support barrier recovery.

Keratolytic action. Fulvic acids and low-molecular-weight humic fractions loosen the bonds between corneocytes, helping to reduce the thick adherent scale. This complements (and may reduce the need for) chemical keratolytics such as salicylic acid.

Evidence summary

Small-scale clinical studies from Czech and German spa centres have reported improvements in PASI (Psoriasis Area and Severity Index) scores following courses of peat bath therapy. Most studies involve 10–20 sessions over 2–4 weeks.

The evidence is promising but limited by small samples, non-standardised peat preparations, and methodological variation. More rigorous trials are needed.

Practical applications

Peat bath treatments — the most studied format; typically at spa or clinic facilities
Peat scalp masks — for scalp psoriasis, which affects approximately 50% of people with plaque psoriasis
Peat-infused shampoos — particularly those combining peat with salicylic acid for keratolytic synergy
Peat body wraps — for localised plaques on back, limbs, or torso

Important notes

Psoriasis is a medical condition. Peat therapy is a complementary approach, not a substitute for prescribed dermatological treatment. Some patients find peat treatments helpful for symptom management between flares or during mild-to-moderate disease.

Always consult a dermatologist before starting new treatments. During active flares with significantly compromised barrier function, new topical products should be introduced cautiously.