Dandruff-Guard™ WS (Piroctone Olamine, Water Dispersible)
Specially processed Piroctone Olamine can be dispersed directly in water, giving high efficiency, no sedimentation, no precipitation.
Dandruff-Guard™ WS is a specially processed Piroctone Olamine that can be directly dispersed in water, giving it high efficiency, without sedimentation or precipitation.
Piroctone Olamine is an anti-dandruff agent that destroys the fungus Pityrosporum Ovale, which is the cause of dandruff on the scalp. Dandruff-Guard™ can treat dandruff, prevent new dandruff from forming and can help stop itchy scalp.
Dandruff-Guard™ WS can also be used in skin care products to reduce or prevent airborne inflammation and allergic reactions.
The results of the study found that after using a shampoo containing Dandruff-Guard™ WS at a concentration of 2.5% for 6 weeks, it reduced dandruff by 81.7% compared to a shampoo containing Zinc Pyrithione at a concentration of 0.5% for the same period of time, which reduced dandruff by 68.6%.
Dandruff-Guard™ WS affects the viscosity of the shampoo by making it thicker. If a thickener such as SugarThick or ClearClean is added to the formula, it is recommended to reduce the amount of thickener used.
Since Dandruff-Guard™ is effective at killing fungi and other germs (broad-spectrum microbiocide/microbiostat), it can also help to deodorize.
Examples of using Dandruff-Guard™ WS at different levels in different formulations.
Anti-dandruff Shampoo (anti-dandruff shampoo) 2.5-5.0%
Anti-dandruff Tonic (anti-dandruff tonic, spray or apply on the scalp) 0.5-1.0%
Deodorizing soap 1.0-2.5%
For maximum dandruff elimination effectiveness, use Dandruff-Guard™ WS. With Zinc Pyrithione
Thai FDA regulations: For rinse-off products, a maximum of 5.0% may be used. However, for leave-on products such as hair tonics and skin creams, no more than 0.5% may be used.
Usage: For dandruff treatment and prevention, can be used together with Zinc Pyrithione for maximum anti-dandruff effectiveness.
Mixing method: Disperse in water first and then mix in shampoo formula. It will dissolve in detergent.
Usage rate: 0.1-5.0% (Please refer to FDA regulations above)
Product appearance: white liquid
Dissolving: Disperses directly in water without precipitation.
Storage: Can be stored at room temperature, but close the bottle tightly and keep away from sunlight or heat. The product has a shelf life of at least 3 years.
INCI Name : Water, Piroctone Olamine (18.4%), Ethyl Alcohol, Propylene Glycol
Examples of products using Dandruff-Guard™ as a key ingredient

Bioderma Atoderm Po Zinc Cream (for Atopic Inflammation)
Use Dandruff-Guard™ 0.1%
- Room (25-40C)
- 36 Months from manufacturing or testing date. (Current Lot will expire: 04/2028)
- 0.10% - 1.00%
- 0.00%
- Add into water phase. Avoid temperature above 60C.
- Avoid heat above 60C
- 0.00 - 0.00
- Dispersible in water
- Shampoo, Spray, Liquid Soap
- -
| Test Name | Specification |
|---|---|
| Appearance | White liquid |
| Odor | Nearly odorless |
| Content (Piroctone Olamine, %w/w) | 17-20 |
| Total plate count | 100CFU/g Max |
| Yeast & Mold | 10CFU/g Max |
| Coliforms | Negative |
| Salmonella | Negative |
| Staphylococcus | Negative |
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