[Chemist77]

What do u think is texapon????????????

[Chemist77]

EO is Ethylene Oxide, I am sure you are well aware of ethoxylation and if you remember we had a short discussion too about this

[Chemist77]

Try to use lukewarm water, might help a bit I suppose. As I told you check the EO moles with your supplier.

[Chemist77]

Is it not possible to pre-dissolve this optical brightener and then incorporate it in the formula? Secondly why dont you try heating this surfactant separately just to check if it is clouding out of the surfactant, just for confirmation. Last but not the least with higher salinity we can tweak the cloud point but again I am not sure if this would be standard for 100 outof 100 cases. It may vary from one situation to another, better to optimize the processing for best results.

[Chemist77]

Are you using needles or 70% active? Check whether it is 2 moles EO if it is in paste form.

[Chemist77]

@Sarah Although I haven’t tried it but I read this article about Sodium Citrate being used in soaps to slow down discoloration from vanilla. The explanation provided was that the salt protects the highly oxidation susceptible aromatic ring of vanilla.
Finding a solution to prevent vanilla discoloration is like looking for a needle in a haystack but you can try Sodium Citrate and we would all be glad here if you find success and let us know as well.

cheers

[Chemist77]

@Bimsmide MakingSkincare has posted a plausible and acceptable link.

[Chemist77]

Active Surfactant Matter is all we are talking about here I suppose. 

[Chemist77]

The companies do all the testing and evaluation to infer the shelf life, i am sure they must be following the guidelines to protect their own interests and those of their customers.
Now coming back to the 60 day shelf life I have never heard of it. I am guessing it would be something very sensitive and delicate (maybe some extremely special actives) that they are compelled to give 60 days shelf life after which the activity and efficacy won’t be same.
I hope someone can give a better input.

[Chemist77]

Every responsible company provides the shelf life either as date of expiry or date of recertification as applicable to the product type.

[Chemist77]

Well let’s hope someone more learned can give a better input here. MPG with that high dosage might produce allergies in certain skin types so it would be better if someone can guide you in a better direction.

[Chemist77]

Simona I had a crystal clear formula (though there is no polymer involved here) with MPG 35-40%, DPG around 3%, little eucalyptus and mint oils. The formula stays clear and no crystallization has been observed till yet (1 year almost), try adding a little surfactant to keep the SA (mine was 1% in the formula) from recrystallizing. I had used Sodium Lauroamphoacetate around 2-3%. Now coming to your gel I guess you can try incorporating in your polymer gel (whichever you feel would be best for you) this concoction and give it a try. Though I am not very sure about the success chances nonetheless you can always try.

The product was a callus remover, FYI. 

[Chemist77]

The polarity would let you decide to choose the right emulsifier but then HLB IS limited to non-ionic emulsions only, for me this feature is pretty narrow.
Though other properties like skin feel, pigment wetting are more general and can be considered for emulsions, in general.

[Chemist77]

Perry IIRC we had a long discussion initiated by zink, eventually it came out that ZnO might have issues with carbomer. If you see diaper creams in general they are w/o so that main function of water repulsion in tandem with zinc oxide coating remains unaffected.

[Chemist77]

Priya read about diaper creams, they are generally w/o type emulsions for a longer stay on the skin and to repel the water. Your emulsifier says its a o/w one, I am not sure how this cream is going to sustain on skin when there is repetitive contact with water. Further only ZnO will not suffice, even the formula should support the function of your actives.

[Chemist77]

Is there phase separation or sedimentation of ZnO????? Try reading literature on ZnO stabilization.

[Chemist77]

The problem could be in your SLES as well, take a small sample of the previous lot (if you have preserved a small sample from it) and repeat the same process. If you are able to replicate the previous quality then your SLES is the culprit.

[Chemist77]

@ozgirl Apologies but I find a pattern here.

[Chemist77]

Check the salt content of CAPB, maybe it has more salt than before and hence you need to cut off @ 0.2%

[Chemist77]

@nasrins good informative link

[Chemist77]

@Ruben I agree with u, but a little correction it would be a runners up trophy for Argentina

[Chemist77]

Discoloration of color I suppose, just a light banter Bobz. Dont mind it, I hardly come across non- serious chemists
@Cherri we would still very much like to know the product being discolored.

Cheers

[Chemist77]

@Gustavo Thickening aside, I am really counting big on Brazil this time to bring the trophy home

[Chemist77]

@Bobzchemist wow this gives me a clear idea about my Moroccan Bath Soap as well. Though it is quite stiff as well, just trying to figure which polymer would provide such stiffness, cellulosic or something else.

[Chemist77]

@Perry I have used SF 1 and it has worked out perfect, only downside is a little initial slimy feel when you take the product in hands and start putting it in hair. But after that it is perfect foaming and it has suspended my pearl particles too, Aculyn 22 failed me on suspension. As we all know sulfate free recipes are a tad too difficult to thicken compared to sulfate based which are generally a cakewalk in most of the cases.