Licorice Root for Psoriasis: Mechanisms, Benefits, Usage & Safety

Psoriasis is a chronic autoimmune inflammatory skin disorder characterized by rapid, overactive skin cell turnover, persistent red scaly plaques, silvery flaking, intense itching, and dry cracked skin. It is triggered by immune system dysregulation, chronic inflammation, oxidative stress, and genetic predisposition. Conventional psoriasis treatments such as topical steroids, immunosuppressants, and synthetic anti-inflammatory drugs often carry side effects with long-term use, including skin thinning, irritation, and immune suppression. Licorice root (Glycyrrhiza glabra) is a research-backed natural herbal remedy for adjuvant psoriasis care, featuring powerful anti-inflammatory, immune-modulating, anti-itch, and barrier-repairing properties. It calms acute psoriasis flare-ups, reduces plaque buildup, relieves stubborn itching, and supports long-term skin stability without harsh irritation. This article elaborates on licorice root’s core working mechanisms, psoriasis-specific benefits, standardized usage protocols, and essential safety guidelines.

1. How Licorice Root Improves Psoriasis (Core Mechanisms)

Different from common skin-soothing herbs, licorice root targets the two root causes of psoriasis: autoimmune inflammation and excessive keratinocyte proliferation, while repairing damaged skin barriers:

Suppresses Chronic Autoimmune Skin Inflammation

Psoriasis is driven by overexpressed pro-inflammatory cytokines (TNF-α, IL-6, IL-17) that trigger persistent skin inflammation and plaque formation. Glycyrrhizic acid and liquiritigenin in licorice root significantly inhibit these inflammatory mediators, suppressing the abnormal autoimmune inflammatory response in psoriatic skin. This reduces redness, plaque swelling, and persistent skin inflammation that sustains psoriasis flare-ups.

Slows Excessive Skin Cell Turnover

A hallmark of psoriasis is accelerated keratinocyte growth, which causes rapid skin cell accumulation and forms thick, silvery scaly plaques. Licorice root bioactive compounds regulate abnormal epidermal cell proliferation, slowing down excessive skin cell turnover to reduce scaling, thick plaque buildup, and recurrent flaking—directly improving the most typical psoriasis lesions.

Relieves Severe Psoriasis Itching & Irritation

Intense, unrelenting itching is the most distressing symptom of psoriasis, often leading to scratching, skin cracking, bleeding, and secondary infection. Licorice root blocks histamine release and reduces cutaneous nerve sensitivity, delivering potent anti-pruritic effects. It quickly calms psoriasis-related itching, breaks the itch-scratch cycle, and prevents lesion deterioration caused by mechanical irritation.

Repairs Damaged Skin Barrier & Dryness

Psoriatic skin has severely impaired barrier function, resulting in extreme dryness, cracking, and increased sensitivity to external irritants. Licorice root promotes epidermal cell repair, boosts skin lipid synthesis, and locks in skin moisture. It relieves severe xerosis, peeling, and cracked skin, restoring barrier integrity to reduce psoriasis flare-up frequency.

Reduces Oxidative Stress & Immune Dysregulation

Chronic oxidative stress and immune imbalance are key predisposing factors for recurrent psoriasis. Licorice root’s rich flavonoid antioxidants neutralize free radicals, reduce systemic oxidative damage, and gently modulate overactive skin immune responses. It stabilizes immune function, lowering the risk of spontaneous and stress-induced psoriasis flare-ups.

2. Key Psoriasis-Specific Skin Benefits

• Reduces red, inflamed psoriasis plaques: Suppresses autoimmune inflammation to fade bright red lesion color and reduce plaque swelling.
• Diminishes thick silvery scaling and flaking: Regulates skin cell turnover to soften thick plaques and eliminate excessive dry scaling.
• Stops intense psoriasis itching and burning: Rapidly relieves persistent lesion itching and stinging discomfort for long-lasting skin comfort.
• Heals dry, cracked psoriatic skin: Repairs compromised skin barriers, relieves extreme dryness, cracking, and bleeding of lesions.
• Reduces flare-up frequency: Stabilizes local skin immune and inflammatory status to lower recurrent psoriasis outbreaks.
• Gentle alternative for long-term maintenance: Non-irritating, steroid-free formula suitable for daily adjuvant care of chronic psoriasis-prone skin.

3. Optimal Usage for Psoriasis Care

Licorice root for psoriasis focuses on topical application for direct lesion soothing and repair, with short-cycle oral supplementation to regulate systemic inflammation and immune imbalance. It serves as a safe adjuvant therapy rather than a replacement for prescription psoriasis medication:

Topical Licorice Application (Core Lesion Care)

Licorice extract topical cream/ointment: Use dermatological formulations containing 3–5% standardized licorice root extract on clean, dry psoriasis plaques 1–2 times daily. Consistent application reduces redness, scaling, and itching, softens thick lesions, and accelerates superficial skin repair. This is the most effective and safest daily method for localized psoriasis.

Licorice root soothing soak: For widespread body psoriasis, steep 8–10g dried licorice root in warm water, prepare a lukewarm bath or compress, and apply to affected areas for 10–15 minutes daily. It soothes large-area inflammation, relieves generalized dryness and itching.

Oral Licorice Supplement (Systemic Anti-Inflammatory Support)

For chronic recurrent psoriasis triggered by systemic inflammation and immune imbalance, take 200–300mg standardized licorice root extract daily in intermittent short cycles. Oral intake modulates systemic inflammatory levels, corrects mild immune dysregulation, and reduces overall skin flare-up tendency. Strict cycle control is required to avoid side effects.

Synergistic Ingredient Pairings for Better Results

Licorice root enhances psoriasis care effects when paired with compatible gentle ingredients. Topically, combine with aloe vera for intense moisturization and crack healing, centella asiatica for enhanced anti-inflammatory repair, and colloidal oatmeal for extreme itching relief. Orally, pair with turmeric and omega-3 fatty acids to amplify systemic anti-inflammatory effects for chronic psoriasis.

4. Critical Safety Rules & Contraindications

Topical licorice extract is extremely safe for long-term psoriasis skin care. Oral supplementation requires strict dosage and cycle management to prevent systemic side effects, especially for chronic long-term users:

Oral Use Intermittent Cycle Rule

For psoriasis adjuvant care, oral licorice must be used in intermittent cycles: 6 weeks of continuous use followed by a 2-week rest period. Uninterrupted long-term oral intake causes glycyrrhizic acid accumulation, leading to water-sodium retention, elevated blood pressure, and hypokalemia. Topical licorice has no systemic absorption risks and is safe for daily long-term lesion maintenance.

High-Risk Groups (No Oral Use / Cautious Use)

• Hypertension, heart disease, kidney disease patients: Strictly avoid oral licorice; topical application is fully safe.
• Pregnant and breastfeeding women: Prohibit oral intake; consult a dermatologist before topical use.
• Low potassium, diabetic patients: Avoid oral licorice supplements to prevent physical condition fluctuations.
• Autoimmune disease patients on immunosuppressants: Consult a doctor before any licorice supplementation to avoid immune interaction.

Skincare Usage Tips & Precautions

Perform a skin patch test on mild lesion areas before full-scale application to avoid rare sensitivity reactions. Do not apply concentrated licorice extract on open bleeding psoriasis wounds. Avoid combining with high-strength exfoliants or irritating skincare actives during flare-ups. Note that licorice root only serves as adjuvant care and cannot replace prescription immunosuppressants or targeted psoriasis medications.

Drug Interactions

Oral licorice may interact with antihypertensive drugs, diuretics, cardiac medications, and corticosteroid drugs. Topical licorice has no drug interaction risks. Psoriasis patients on long-term prescription medications must consult their dermatologist before using oral licorice supplements.

5. Research Background

Pharmacological and dermatological studies validate licorice root’s efficacy for psoriasis adjuvant treatment. Glycyrrhizic acid exhibits significant anti-psoriatic activity by inhibiting key pro-inflammatory cytokines, reducing abnormal keratinocyte proliferation, and alleviating psoriatic inflammation. Clinical observations confirm that topical licorice extract effectively reduces psoriasis plaque redness, scaling, and itching, and intermittent oral supplementation lowers chronic flare-up frequency, making it a reliable natural auxiliary remedy for mild-to-moderate psoriasis.

Final Summary

Licorice root is a valuable natural adjuvant remedy for mild-to-moderate psoriasis, targeting psoriasis’ core autoimmune inflammation, excessive skin cell growth, and barrier damage. Topical licorice soothes active flare-ups, relieves itching and scaling, and repairs psoriatic skin, while short-cycle oral supplementation regulates systemic inflammation to reduce recurrence. For safe and effective care, prioritize daily topical maintenance and strictly control oral usage cycles. Severe, widespread, or refractory psoriasis must rely on professional standardized medical treatment, with licorice root used only as a supportive conditioning method.