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@Abdullah just found an article and it said that”Because sarcosine can be nitrosated to form N-nitrososarcosine, a known animal carcinogen, these ingredients should not be used in cosmetic products in which N-nitroso compounds may be formed”
Final report on the safety assessment of Cocoyl Sarcosine, Lauroyl Sarcosine, Myristoyl Sarcosine, Oleoyl Sarcosine, Stearoyl Sarcosine, Sodium Cocoyl Sarcosinate, Sodium Lauroyl Sarcosinate, Sodium Myristoyl Sarcosinate, Ammonium Cocoyl Sarcosinate, and Ammonium Lauroyl Sarcosinate - PubMed (nih.gov)
 Sorry again, i am no chemist so like a blind mouse here….  :'( 

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singhc10 thank you) 

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Dr Catherine Pratt said:

If you are trying to keep to environmental regulations and go natural you can use ethanol that is produced from grains and is just called Bio-ethanol.

Why do you only want to use ethanol as your only preservative. If you have to use up to 20% as Perry suggested, then this would change the viscosity, have you tried it out yet.

Please let us know how you go? Cheers Catherine

Thank you for your answer,  Dr Catherine Pratt!
I just want to copy the Weleda formula, that’s why I use only ethanol. I will try to use it at different % to see how it goes!!

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Pharma said:

20% with regard to the water phase. Also, in combination with glycerol and a low pH, less might work.

Say you’d have 50% water, 6-8% ethanol, and a few % glycerol at pH 4.5 should be enough to stop anything from growing (not killing any microbes but just stopping them from growing).

Thank you Pharma for your answer)))))))

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Perry said:

You need at least 20% ethanol to be a preservative. But a significant problem is that ethanol is classified as a VOC which generally puts it in violation of environmental regulations if you use it at that level in something like a lotion.

Thank you Perry!!!! So you think that Weleda use less than 20%?? Can it work that way in this formula???because I don’t think that they are using more than 20%of almond oil!?