Which have Better NMF?

Skin

Which have Better NMF?

Posted by Priya on May 28, 2014 at 3:28 am

Which has better NMF value in glycerin, Na Lactate, Na PCA, Urea & propylene glycol?

Ruben replied 10 years, 5 months ago 6 Members · 12 Replies
12 Replies

nasrins

Member
May 28, 2014 at 3:48 am

what is NMF value?
Priya

Member
May 28, 2014 at 3:54 am

i.e. Natural Moisturizing factor
pma

Member
May 28, 2014 at 9:42 am

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.
Bobzchemist

Member
May 28, 2014 at 10:21 am

NMF:

http://www.lni.wa.gov/Safety/Research/Dermatitis/files/skin_phys.pdf

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.
vitalys

Member
May 28, 2014 at 10:42 am

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.
pma

Member
May 28, 2014 at 12:33 pm

Speanking in NMF… I’ve just read an interesting article: http://www.shiseidogroup.com/rd/uptodate/sc2011_02.html
Ruben

Member
May 28, 2014 at 2:06 pm

I am confused. Harry’s Cosmeticology 8th edition (Table 13.2, pag 267) lists PCA and lactate as NMF
pma

Member
May 28, 2014 at 3:20 pm

Ruben: yes, they’re.
vitalys

Member
May 28, 2014 at 3:35 pm

I’m sorry, I wasn’t attentive, yes, any lactates are the part of NMF, since Lactic Acid itself is a part of NMF
Priya

Member
May 29, 2014 at 2:24 am

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?
Bobzchemist

Member
May 29, 2014 at 9:48 am

@Ruben - I do not ever pretend to be infallible. You are correct, and I answered too quickly - thanks for catching that.
Ruben

Member
May 29, 2014 at 12:59 pm

@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.

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?