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Non-woven sheet mask
Hi all,
Does anybody have any tips on formulating for this type of product?I recently made a very thin liquid emulsion and impregnated a non-woven paper mask with it. After leaving it on my face for around 5-10 minutes, face mask left a red spot. After 2-3 minutes I started feeling like my face was burning.From a quick search of products sold at Sephora, I’m seeing all of the available are actually water based serums instead of emulsion. Could this be the problem?I’ve gotten rid of many things I’ve been suspicious about in my formula so right now its basically an emulsion with GMS and cetearyl alcohol, olive oil and shea butter in approximately 65% water, 5% glycerin, preserved with phenoxyethanol, potassium sorbate and sodium benzoate….but mask is still burning.Thanks in advance! -
4 Replies
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Does the emulsion burn when you wear it without a sheet mask?
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What is your usage rate of Phenoxyethanol? Remember that Phenoxyethanol can sting when applied to the face at too high of a level. That is what gave it a bad name many years ago. Did you use it at a rinse-ff or leave-on suggested leevl?
Indeed most of these products are water based serums.
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@AuroraBorealis It does burn when I leave the liquid emulsion on my face, without the actual sheet
@Microformulation Phenoxyethanol is in my formula at 0.825%Still curious why most these products are hydrogels -
I think at that level and as a standalone the Phenoxyethanol could be your irritant. It is recommended at 0.5-1.0% but you can decrease the net amount of Phenoxyethanol by using it in combination with Ethylhexylglycerin (Euxyl PE9010). Note that if you change to a serum it may not be your best preservative due to solubility.
Why are they serums? Simply because a serum will migrate out of the mask material bette than a thicker emulsion.
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