topical · for psoriasis
Coal Tar Shampoo and Cream
Reviewed by the Nimbera editorial team · Last updated May 2026
How to use
For scalp psoriasis: apply 1-5% coal tar shampoo, leave for 5-10 minutes, then rinse 2-3 times per week. For body plaques: apply coal tar cream or ointment (0.5-5%) to plaques and cover with clothing. Use consistently for 4-6 weeks.
How it works
Coal tar suppresses DNA synthesis in rapidly dividing keratinocytes, reduces inflammation, and decreases the abnormal skin cell turnover rate that causes plaque buildup - a mechanism used clinically for over 100 years.
Where to buy
Neutrogena T/Gel shampoo, MG217 coal tar ointment, or Psoriasin products at pharmacies. Prescription-strength formulations available through dermatologists.
Typical cost: $10-$30 per month
Safety notes
Coal tar stains skin, hair, and clothing. Has a strong odor. Increases photosensitivity - avoid sun exposure on treated areas. Not recommended for use near the face. Avoid during pregnancy. Discontinue if skin becomes irritated.
Drug & supplement interactions
- Always tell your doctor or pharmacist about any supplements you take.
- Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
- Herbal remedies can affect how the body absorbs or metabolises drugs.
- Check drugs.com interactions checker before starting.
Clinical source
PubMed - Slutsky et al. 2010This information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.