Recommended Cooling Agents for Long-Lasting, Non-Stinging Cooling Spray

For a cooling spray that provides a long-lasting cooling sensation without skin irritation (stinging), I recommend the following cooling agents from the Cool Sensation category:

1. Water-Cool™ (Water-Soluble Cooling Agent)

This is the most suitable option for a water-based cooling spray because it is directly water-soluble.

• Highlight: Provides a cooling sensation that lasts for more than 1 hour.
• Benefit: Easy to use in clear spray formulas without needing additional solubilizers.
• Usage Rate: 1-5% (up to 20% for intense cooling).
• Solubility: Water.

2. Menthyl PCA

If you prioritize the longest duration, this is an excellent choice.

• Highlight: Provides long-lasting cooling for several hours by slowly releasing cooling components.
• Benefit: It also acts as a moisturizer (Natural Moisturizing Factor) and is very gentle on the skin.
• Usage Rate: 0.1-3%.
• Solubility: Soluble in oils and glycols. For a water-based spray, you will need a solubilizer like Flora Solve™ L70.

3. WS-10 Cooling Agent (Menthoxypropanediol)

Ideal for those who want high cooling efficiency without the strong smell or sting of menthol.

• Highlight: Approximately 4.5 times cooler than menthol.
• Benefit: It is a liquid, making it easy to blend into formulas.
• Usage Rate: 0.1-0.5%.
• Solubility: Soluble in glycols, oils, or alcohol.

Summary Recommendation:

• For ease of formulation (Water-based spray): Use Water-Cool™.
• For maximum duration and skin care: Use Menthyl PCA.
• To avoid skin irritation: All the above synthetic cooling agents are designed to provide a "clean" cool feeling with significantly less stinging or burning compared to traditional Menthol crystals.

Formulation Tip: To enhance the cooling effect and duration, you can combine Water-Cool™ with a small amount of WS-10 or WS-23 for an immediate and long-lasting impact.