Adding CoolTouch™ to Facial Spray: Solubility and Irritation Concerns

Question

I have a facial spray formula and would like to add CoolTouch™ (Menthyl Lactate) to provide a cooling sensation. Are the ingredients in my existing formula compatible with CoolTouch™? What is the correct method to incorporate CoolTouch™ into the facial spray formula, and are there any precautions I should take, especially regarding application on the face and near the eyes?

MySkinRecipes Expert · Accepted Answer

Hello,

Regarding the facial spray formula you provided, the staff has checked and confirmed that the ingredients in your original formula are compatible.

For your question about modifying the formula to add a cooling sensation using CoolTouch™ (Menthyl Lactate), the staff advised that CoolTouch™ may not be suitable for direct use in a facial spray as it can cause eye irritation due to the cooling sensation.

However, if you still wish to use CoolTouch™, the staff suggested the following method:

Pre-mix CoolTouch™ by dissolving it with Butylene Glycol.
Use a ratio of approximately 1:5 (CoolTouch™ : Butylene Glycol), for example, if using 0.5% CoolTouch™, use about 2.5% Butylene Glycol.
Then, add this dissolved mixture into your main formula.

The staff also emphasized the importance of testing the formula before use to ensure that the level of Butylene Glycol is sufficient to help dissolve CoolTouch™ into the water phase and to evaluate any potential irritation.

Hope this information is helpful.