Cooling Cream: Percentage of Cooling Agent and Effect of Alcohol
คำถาม
I want to make a cooling skin cream. If I want it to stay cool for a long time, what percentage of Freez me should I add? And if I add [url=http://www.myskinrecipes.com/shop/%E0%B8%AA%E0%B9%88%E0%B8%A7%E0%B8%99%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B8%81%E0%B8%AD%E0%B8%9A%E0%B9%80%E0%B8%84%E0%B8%A3%E0%B8%B7%E0%B9%88%E0%B8%AD%E0%B8%87%E0%B8%AA%E0%B8%B3%E0%B8%AD%E0%B8%B2%E0%B8%87%E0%B8%84%E0%B9%8C/706-alcohol-%E0%B9%81%E0%B8%AD%E0%B8%A5%E0%B8%81%E0%B8%AD%E0%B8%AE%E0%B8%AD%E0%B8%A5%E0%B9%8C.html:1bs1701m]alcohol[/url:1bs1701m], will it help keep it cool for longer?
คำตอบ
Cooling Cream Formulation
To create a cooling skin cream with a long-lasting effect, the ingredient you are likely referring to as 'Freez me' is one of the cooling agents available, such as Water-Cool™, CoCool™, or WS-23 Cooling Agent.
For a long-lasting cooling sensation, Water-Cool™ (Water-Soluble Cooling Agent) is a good option as its description mentions providing cooling for more than 1 hour. The recommended usage rate for Water-Cool™ is 1-20%. To achieve a more pronounced and potentially longer-lasting cooling effect within safe limits, you could use a percentage towards the higher end of this range, such as 10-20%, depending on the desired intensity.
Regarding the use of Alcohol: Alcohol provides an immediate cooling sensation due to evaporation. This effect is quick and temporary. While alcohol can help dissolve some cooling agents (like CoCool™ and WS-23), the long-lasting cooling effect primarily comes from the cooling agent itself, not the alcohol. Adding alcohol might enhance the initial cooling flash but won't significantly prolong the overall cooling duration provided by the cooling agent.
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