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@em88, thank you for sharing. I am little bit of afraid of irritation. I will try menthol and camphor next time on emulsified sugar scrubs. Do you know why the cooling effect turns into warming effect? Thanks @em88 in advance.

For facial cream, I think, peppermint eo is good enough.

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@em88
Here are the results:
on facial cream, I tried the idea of @Belassi. Thanks @Belassi. i used only 0.1% peppermint oil. It smells good and gives cooling feel. Its smell is great! it makes you feeling good. 
On the emulsified Scrubs, I used 1% menthyl lactate + mentha haplocalix extract. It cooler that I need for hand and feet. But, the endure of cooling is short. This is my first time to formulate scrubs.

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@lmosca, thanks again. I agree with you 100%. I usually evaluate each active ingredient deeply before formulating. I am also planing to formulate heating cream for cold seasons. Cooling cream is for spring and summer.
@lmosca do you have experience on menthyl and peppermint eo? How do I improve the cooling duration and strength?

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@lmosca, thanks a lot. 

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@Bill_Toge thanks. I just read the white paper saying that menthyl lactate is less irritating. I do not have experience on it yet.

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@em88 , I will some time late next week. Just order and am told that little delay due to Wuhan virus 

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Thanks @em88

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Hi everyone!
 I just found after searching on internet:
when menthol or its substant touch the skin, the skin cold receptors send the signals to our brain to recognize the cooling effects.

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@em88, thanks so much 
what % of each based your experience?

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@Belassi thanks a lot. 

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Glycerin is water soluble. Water can not mix with oil.
you need emulsifier.

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Special thanks to @”Dr Catherine Pratt”. I will try it

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Thanks all.

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@Imosca!  Thanks a lot.

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@Imosca, thanks a lot for sharing your knowledge.
Is menthol lactate better than menthol in terms of less irritating, longer cooling effects?

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@alchemist01! thanks a lot. Would you explain for me how it works as cooling effect? 
After formulating cream with menthol, here is what I think that it should take away or absorb the energy when we apply the cream on skin. That makes us feel cooling? but, i am not sure?

What is your company name and where is it located?

Thanks

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I want to clarify that menthyl lactate is formulated with other ingredients to become the cream.

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@Pharma, thanks. type of covid-18

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@EVchem, phenoxyethanol and caprylyl glycol, is its combination to kill vivid-19?

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Thanks @EVchem
very detail document about hydroxystearic acids

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Anyone has experiences or knowledge about Hydroxystearic Acid and stearic acid? Please share! how are they differences?

Thanks in advance. 

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thanks @Perry

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@Perry, would you please explain why above 2% HA will be a thick gel?
Thanks in advance @Perry

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The usage recommended and (water soluble or oil soluble) are listed on coa or ingredient description.

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usually the manufacturers tell you on the ingredient description or on COA