Achieving Clear Sunscreen Gel with Ensulizole
Question
I am trying to make a sunscreen formula by mixing [url=http://www.myskinrecipes.com/shop/chemical-sunscreen/1021-ensulizole-phenylbenzimidazole-sulfonic-acid.html:1z8zm5e5]Phenylbenzimidazole Sulfonic Acid[/url:1z8zm5e5] with plain distilled water. However, the result is not clear, but a cloudy, milky liquid. I would like to know what I need to do or what substance I need to mix to get a clear liquid result?
[url=http://www.myskinrecipes.com/shop/chemical-sunscreen/1021-ensulizole-phenylbenzimidazole-sulfonic-acid.html:1z8zm5e5]Ensulizole[/url:1z8zm5e5] is suitable for use in sunscreen formulas that require a clear gel texture because [url=http://www.myskinrecipes.com/shop/chemical-sunscreen/1021-ensulizole-phenylbenzimidazole-sulfonic-acid.html:1z8zm5e5]Ensulizole[/url:1z8zm5e5] is directly water-soluble.
shop/chemical-sunscreen/1021- [url=http://www.myskinrecipes.com/shop/chemical-sunscreen/1021-ensulizole-phenylbenzimidazole-sulfonic-acid.html:1z8zm5e5]Ensulizole[/url:1z8zm5e5]-phenylbenzimidazole-sulfonic-acid.html
Answer
Based on the information about Ensulizole (Phenylbenzimidazole Sulfonic Acid), the reason your mixture with plain distilled water is cloudy instead of clear is likely due to the pH of the water.
Ensulizole requires a pH higher than 6.8 to dissolve properly in water. The ideal pH range for a formula containing Ensulizole is 6.8-7.0, which is also suitable for the skin and helps prevent precipitation of the ingredient.
Plain distilled water typically has a neutral pH around 7, but it can sometimes be slightly acidic due to dissolved carbon dioxide, or the pH might not be consistently above the required 6.8 threshold for Ensulizole to fully dissolve. When the pH is too low, the Ensulizole does not fully solubilize, leading to a cloudy or milky appearance rather than a clear solution.
To achieve a clear solution, you need to:
- Ensure the water you are using has a pH above 6.8.
- Adjust the pH of the water (or the final mixture) to the ideal range of 6.8-7.0 using a suitable alkaline ingredient. Common alkaline pH adjusters in cosmetics include Sodium Hydroxide solution or Triethanolamine. Add the alkaline solution drop by drop while stirring and checking the pH with a pH meter or pH strips until the desired range is reached and the solution becomes clear.
Once the pH is correctly adjusted, the Ensulizole should dissolve completely, resulting in the clear liquid suitable for gel-based sunscreen formulations.
