Adding Cooling Agents to Alcohol-Free Deodorant Spray Formula

Yes, you can add Freeze Me™ (Menthone Glycerin Acetal) and Ethoxydiglycol to your alcohol-free deodorant spray formula to provide a cooling sensation.

Here's a breakdown of how these ingredients work and considerations for adding them:

• Freeze Me™ (Menthone Glycerin Acetal): This ingredient provides a cooling sensation without the typical scent of menthol. It is soluble in glycols and works best when dissolved in a base like Ethoxydiglycol or Ethyl Alcohol. Since your formula is alcohol-free, Ethoxydiglycol will help incorporate Freeze Me™ into your water-based spray.
• Ethoxydiglycol: This acts as a solvent and carrier. It is soluble in water and glycols, making it suitable for your formula. It can help dissolve the oil-soluble components like Freeze Me™, Farnesol, and Citromask™ in the water phase, improving the stability and potentially enhancing the delivery of active ingredients.

Considerations for your formula:

1. Solubility and Stability: Ethoxydiglycol will help dissolve Freeze Me™ and other oil-soluble ingredients in your water base, which is emulsified by Light Lotion Maker. Ensure thorough mixing to maintain a stable spray.
2. Cooling Effect: Freeze Me™'s cooling effect is enhanced by Ethoxydiglycol. You will need to experiment with the concentration of Freeze Me™ to achieve your desired cooling level.
3. Usage Rates:
   • Ethoxydiglycol has regulatory limits. For leave-on or skin spray products, the maximum usage rate is currently 2.6%. You must adhere to this limit.
   • Freeze Me™ can be used at concentrations from 0.1% to 30%, with a recommended rate of around 5% for a noticeable cooling effect. However, achieving a strong cooling effect might be challenging while staying within the 2.6% limit for Ethoxydiglycol, as Freeze Me™ works best when dissolved in it.
4. Mixing: You can likely add Ethoxydiglycol and Freeze Me™ to the water phase, potentially incorporating them with the Mild Preserved Eco™ as it is soluble in Ethoxydiglycol. Ensure all ingredients are well dispersed or dissolved.
5. pH: Freeze Me™ works best in a pH range of 6.5-12. Your current formula ingredients like Light Lotion Maker and Mild Preserved Eco™ are stable in a pH range of 4-9. You should check the final pH of your formula after adding the new ingredients to ensure compatibility and optimal performance of all components.

In summary, you can add Freeze Me™ and Ethoxydiglycol to your formula for a cooling effect without alcohol. Use Ethoxydiglycol within the 2.6% regulatory limit for skin sprays and adjust the concentration of Freeze Me™ to find the desired cooling sensation within this constraint.