Incorporating Zinc Pyrithione and Piroctone Olamine into Shampoo

To create an anti-dandruff shampoo using Zinc Pyrithione and Piroctone Olamine with your existing shampoo base, these two ingredients are effective when used together.

How They Incorporate into Shampoo

• Zinc Pyrithione: This ingredient is typically in a dispersed form (like a suspension) rather than truly dissolved in water or oil. To incorporate it evenly into your shampoo, it needs to be thoroughly dispersed, often requiring high-speed blending. The final shampoo formula should have sufficient viscosity to keep the Zinc Pyrithione particles suspended and prevent settling over time.
• Piroctone Olamine: While Piroctone Olamine powder can dissolve in detergents (which are present in shampoo), it's best to disperse it in water first before adding it to the shampoo base. There is also a water-dispersible liquid form available which makes incorporation easier as it disperses directly in water.

No additional specific substance is typically needed solely to help these two ingredients dissolve together; their incorporation relies on proper dispersion techniques and the properties of the shampoo base itself.

Recommended Usage and Mixing Procedure

For a rinse-off anti-dandruff shampoo, you can use a combination of these ingredients within the recommended ranges:

• Zinc Pyrithione Liquid (50% active): 2-4% (This provides 1-2% active Zinc Pyrithione)
• Piroctone Olamine (e.g., Dandruff-Guard™ WS, 18.4% active): 2.5-5.0%

A common effective combination could be around 2% Zinc Pyrithione Liquid and 2.5% Dandruff-Guard™ WS.

Mixing Procedure:

1. Prepare your shampoo base according to your existing formula.
2. In a separate container, weigh out the required amount of Zinc Pyrithione Liquid. Add a small amount of water or a portion of your shampoo base and blend at high speed until the Zinc Pyrithione is evenly dispersed.
3. In another separate container, weigh out the required amount of Piroctone Olamine (e.g., Dandruff-Guard™ WS). Disperse it in a small amount of water.
4. Slowly add the dispersed Zinc Pyrithione mixture to the main shampoo base while stirring gently but effectively.
5. Slowly add the dispersed Piroctone Olamine mixture to the main shampoo base while stirring.
6. Continue stirring until the entire mixture is homogenous.
7. Check the viscosity of the final shampoo. Ensure it is viscous enough to keep the Zinc Pyrithione suspended. Adjust viscosity if necessary.
8. Avoid heating the mixture above 80°C during the process.

Important Considerations

• Avoid using ingredients like Disodium EDTA, other chelating agents, or oxidants in formulas containing Zinc Pyrithione, as they can cause it to deteriorate.
• Ensure sufficient viscosity in the final product to prevent the Zinc Pyrithione from settling over time.