Coal Tar for Psoriasis: Why the 0.9% Concentration in Dermabon is Key

Coal tar for psoriasis

As a Pharmaceutical Chemist and Clinical Dermatologist, I spend a significant portion of my time analyzing the molecular composition of skincare treatments. In the world of dermatology, we are constantly bombarded with “miracle ingredients” promising to cure chronic conditions overnight. However, when dealing with severe inflammatory diseases, sometimes the most advanced science lies in perfecting what we already know works.

Today, I want to talk to you about one of the oldest, most studied, and scientifically proven ingredients in the history of dermatology: Coal Tar.

Used in medicine for over a century, this compound has been the gold standard for treating severe scaling and inflammation. But in pharmaceutical chemistry, the secret isn’t just what ingredient you use; it is how much you use. Join me as we explore how this compound works at a cellular level and why finding the exact formulation of 0.9% coal tar for psoriasis is the key to restoring your skin’s health without adverse side effects.

The Science Behind Coal Tar: Halting Cellular Mitosis

To understand why coal tar is so remarkably effective, we must first understand what your skin is doing when you have psoriasis.

In a person without this condition, the life cycle of a skin cell—from the time it is born in the deep layers of the epidermis until it reaches the surface and sheds—takes approximately 28 to 30 days. In a patient with psoriasis, the immune system sends faulty signals that drastically accelerate this process. Skin cells mature and reach the surface in just 3 to 4 days.

This process of accelerated cell division and reproduction is known in biology as hyperactive mitosis. Because the dead cells cannot shed fast enough, they pile up on the surface, forming the thick, red, and painful scaly plaques you know all too well.

The Mechanism of Action: Keratolytic and Antiproliferative Effects

Coal tar is not a simple moisturizer; it is a complex active pharmaceutical ingredient composed of thousands of organic compounds. When formulated correctly and applied to psoriatic plaques, it acts on two main fronts:

1. Antiproliferative Action: The tar penetrates the stratum corneum (the outermost layer of the skin) and interacts with the DNA of the skin cells to slow down cellular mitosis. Literally, it tells your skin to “hit the brakes” on its accelerated reproduction, returning the cell regeneration cycle to its normal 28-day rhythm.
2. Keratolytic Action: It works by breaking down keratin (the protein that forms the hard scales). This helps to soften and dissolve the thick plaques, allowing the dead skin to slough off smoothly and naturally. This reduces the thickness of the lesions and provides deep relief from severe itching.

0.9% Coal Tar for Psoriasis: The Perfect Balance

In pharmacology, there is a fundamental principle known as the “Therapeutic Window.” If you use too little of an active ingredient, you won’t see any results (ineffectiveness). If you use too much, you will cause toxicity or tissue damage (adverse effects).

Coal tar is an extremely potent substance. For decades, old compounding pharmacies used very high concentrations (ranging from 5% to 10%). While these heavy doses eventually cleared the plaques, they also caused severe contact irritation, extreme photosensitivity (severe burns when exposed to the sun), and permanent staining of the skin and clothing. Many patients abandoned the treatment because the cure felt worse than the disease.

On the other hand, many modern, low-end commercial commercial shampoos and over-the-counter soaps use concentrations below 0.5%, which is simply insufficient to penetrate chronic, hardened psoriatic plaques.

Dermabon’s Master Formulation

After years of clinical research and formulation testing, the chemists behind Dermabon managed to stabilize the molecule at its absolute optimal point: a 0.9% active concentration.

Why is this specific number so vital?

• High Efficacy: The 0.9% concentration is potent enough to exert the necessary antiproliferative effect to stop the hyperproduction of cells and flatten psoriasis plaques.
• Maximum Tolerability: By staying just below the 1% threshold, the formulation eliminates the risk of chemical burns, severe irritation, and skin thinning.
• Science-Backed: The FDA (U.S. Food and Drug Administration) recognizes coal tar in specific concentrations as a safe and effective treatment for psoriasis, a stance strongly supported by guidelines on over-the-counter treatments and coal tar from the National Psoriasis Foundation.

Dermabon has successfully encapsulated this exact dose of 0.9% coal tar for psoriasis into a dermatological-grade soap bar, combining it with emollient bases that protect the skin’s lipid barrier during washing.

Frequently Asked Questions

As a healthcare professional, I know patients have valid concerns before starting a treatment with this ingredient. Here, I address the most common ones:

Why does coal tar have such a distinct smell?

Coal tar is a natural byproduct derived from coal processing. Its complex molecular profile contains phenolic and aromatic compounds that give it a strong, distinct odor, often compared to smoked wood or medical tar. In Dermabon, we do not use artificial fragrances (perfumes) to mask this smell, because synthetic perfumes are highly irritating to psoriatic skin. The smell is, in fact, proof that you are using a real, pure, unadulterated active ingredient. Furthermore, the scent dissipates quickly from the skin after rinsing.

Is it safe to use the 0.9% concentration long-term?

Absolutely. Unlike topical corticosteroids (cortisone) which cause skin thinning (atrophy), dependency, and severe withdrawal syndromes, the 0.9% concentration of coal tar in Dermabon is specifically designed for daily, prolonged use. It does not lose its efficacy over time (a phenomenon known as tachyphylaxis) and safely helps maintain your skin in a state of remission without damaging your local immune system.

Conclusion

In modern dermatology, we don’t need magic; we need precise biochemistry. The suffering caused by psoriasis—both physical and emotional—requires solutions that attack the problem at its cellular source, not cosmetic lotions that merely disguise dryness.

The science is remarkably clear: stopping accelerated cellular mitosis is the true path to remission. And pharmacology has proven that the exact balance between healing power and daily safety is found in 0.9% coal tar for psoriasis.

Dermabon is not a common soap; it is a meticulously engineered delivery vehicle for an active ingredient validated by over a century of medical practice, perfected for today’s patient.