nasrins
Forum Replies Created
-
@belassi this formula is a hand cream?
-
6% cetyl alcohol!!!!!?? so can I exert it from tube?
behentrimonium chloride itself thickens the formula -
woooooowww 3%cetyl alcohol will thick the emulsion so much…ya?
-
@david its just a report and it isnt in paper form, is it authentic?
@bill_toge here iron is catalyst and isnt necessary in formation of benzene -
I use parabens for creams,lotions and other emulsions, for shampoos and other showers I use isothiazolines but I just use and no have any idea about them. I accept them.
-
I dont have any background about microbes, I dont even know what is gram+ and gram-. but you are right I shoud start.
-
@bobzchemist the other option is liquid nitrigen
-
@bobzchemist take it easy…
-
@david I have but now Im at home…
-
@david I think glycerin doesn’t cause any penetration it just maintain moisture at the surface of skin(hydrogen bond formation via 3oH groups) and petrolatum also maintains moisture(via barrier layer). why do u complicate it?
-
@bobzchemist paraben is an apple and isothiazolin is a brick howevere both are preservatives, ya?
I dont have any interest in studyng about preservatives and I want to get from others experiences
;
-
@markbroussard what are different between parabens and isothiazolin?
-
@belassi why dont u comment your formula?
-
@markbroussard thanks alot
@perry is there any valid website or test method for 8weeks test(such as ASTM test methods), I want to report it and I cant say I got it from chemist corner,
-
@markbroussard I don’t think so there is any relation between NaCl and gums in viscosity…
-
lubrizol,making cosmetic and many other reputed companies introduce furmulas with procedure
https://www.lubrizol.com/PersonalCare/Formulations/SkinCareBodyLotions.html
http://www.makingcosmetics.com/Formulas_ep_5.html
-
@markbroussard
“You will always know if your product fails well in advance of the point in time that you can conclude that it passes”
what does it mean? -
so there is no guranteed way
-
@markbroussard yes you are right…
-
all perfume story is organic chemistry, and in my opinion its so difficult #-o
-
Excellent……Im not native english but I understood fully
-
@MarkBroussard<formulating at pH <4.5 not only enhances your preservation efficacy, it also minimally disrupts the acid mantle barrier.>
you mean pH>4.5 ya?
-
yes I have but could I rely on?, is it scientific method or it is obtained experimentally?
-
As I studies in some papers all emulsifiers have hydrophobic/hydrophilic groups but vise versa isn’t always valid.
“when an emulsifier is added to the system, the droplets remain dispersed, and a stable emulsion is obtained” http://www.emulsifiers.org/ViewDocument.asp?ItemId=11& cetyl alcohol does this so why not be an emulsifier? when droplet are in a viscose condition are they have any potential to seperate? these are not overal laws ………..and I dont know maybe I am wrong
-
some one says me put the sample in oven and when it starts to melting set aside and see if it separates or not!!!!