Zinc Pyrithione (ZPT) is an active ingredient commonly used in anti-dandruff products, including shampoos and scalp treatments. It is known for its effectiveness in reducing and controlling dandruff symptoms.

Zinc Pyrithione works by targeting the underlying causes of dandruff, such as an overgrowth of a yeast-like fungus called Malassezia on the scalp. This fungus is associated with dandruff and seborrheic dermatitis, a common skin condition characterized by red, itchy, and flaky patches on the scalp.

Here are some key points about Zinc Pyrithione:

1. Anti-fungal properties: Zinc Pyrithione has antifungal properties that help inhibit the growth of Malassezia on the scalp. By reducing the presence of this fungus, it helps alleviate dandruff symptoms.

2. Sebum regulation: Zinc Pyrithione also helps regulate sebum production, which is the oily substance secreted by the scalp. Excessive sebum production can contribute to dandruff, and Zinc Pyrithione helps normalize this process.

3. Anti-inflammatory effects: In addition to its antifungal properties, Zinc Pyrithione has anti-inflammatory effects. It can help reduce scalp inflammation associated with dandruff and seborrheic dermatitis, relieving itchiness and redness.

4. Exfoliating action: Zinc Pyrithione aids in the exfoliation of dead skin cells from the scalp. This helps remove the flaky skin that is often seen with dandruff, promoting a healthier scalp environment.

The "50% suspension" mentioned refers to the concentration of Zinc Pyrithione in the product. A 50% suspension means that the product contains 50% of Zinc Pyrithione as the active ingredient. The remaining percentage consists of other ingredients necessary to create the suspension, such as water, surfactants, stabilizers, and preservatives.

When using a Zinc Pyrithione 50% suspension anti-dandruff product, it is important to follow the instructions provided by the manufacturer. Generally, it involves applying the product to wet hair, massaging it into the scalp, leaving it on for a few minutes, and then rinsing thoroughly. Regular use as directed can help control dandruff and improve the overall condition of the scalp.