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Which have Better NMF?
Which has better NMF value in glycerin, Na Lactate, Na PCA, Urea & propylene glycol?
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12 Replies
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what is NMF value?
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i.e. Natural Moisturizing factor
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I think you meant TEWL… I guess glycerin, but urea will add benefit that glycerin won’t. Usually you use multiple ingredients to obtain multiple benefits.
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NMF:
So, glycerin, Na Lactate, Na PCA, & propylene glycol are not part of the NMF at all.Only Urea would count as part of the Natural Moisturizing factors - there are quite a few. -
Exactly, Bobzchemist - Only Urea belongs to the NMF in the list you have mentioned. However, in this list I guess Urea has the best moisturizing capabilities. But it also depends on formulation you wish to create. Urea may be quite aggressive keratolytic in certain concentration.
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Speanking in NMF… I’ve just read an interesting article: http://www.shiseidogroup.com/rd/uptodate/sc2011_02.html
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I am confused. Harry’s Cosmeticology 8th edition (Table 13.2, pag 267) lists PCA and lactate as NMF
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Ruben: yes, they’re.
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I’m sorry, I wasn’t attentive, yes, any lactates are the part of NMF, since Lactic Acid itself is a part of NMF
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Handbook of Cosmetic Science and Technology, Fourth Edition says water biding capacity of Na salt of lactic acid & PCA founds to be higher than that of glycerine & sorbitol. How we can justify this terminology?
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@Ruben - I do not ever pretend to be infallible. You are correct, and I answered too quickly - thanks for catching that.
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@Bobzchemist. No problem. I, and I assume all of us, appreciate your input to almost every problem or question posted. I have learned a lot from your expertise.
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