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What is Wrong??
Hi everyone,
I used ‘Sodium styrene / acrylates copolymer’ in my shower gel.
but when ı add it, the viscosity fastyl decreases…
ı adjust the viscosity with NaCl.I can’t get the consistency I want. what do you think about that ?How can ı solve this situation ?
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30 Replies
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You haven’t said what else you have in your shower gel.
At the moment it is complete guesswork. -
@ketchito @@Benz3ne
Thank you I should have been careful with the content.
There is my shower gel ingredients:SLES 15%
BETAİNE 5%
C12-13 Alkyl lactat 0,5%
Coco Glucoside 5%@chemicalmatt
styrene / acrylates copolymer which I use as “opacifier” except these. -
@filiz Styrene / acrylates copolymer is a very sensitive opacifier, and as I mentioned, it doesn’t like salt much, which by the formula you posted, might be in fairly high amounts to get the proper viscosity. Also, if your pH is low (lower than 5.5), Betaine starts behaving like a cationic, making the system mor unstable.
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thank you @ketchito
unfortunately, when we increase the amount of salt, the reaction reverses due to the salt curve. The viscosity of the product decreases.I did a trial by increasing the amount of c12-13 alkyl lactat. Even after adding opacifier, the viscosity was somewhat good. However, when I added the essence, the viscosity completely broke down. however, the same essence works very easily without opacifier.
There are too many variables, but opacifier is definitely a problem.
Any suggestions for solve this problem ? -
By the way, my pH value = 5,5-6
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@filiz You could try with a glycol distearate based opacifier instead. Also, I would make one sample without the opacifier, to see is viscosity is Ok without the opacifier (or not, in which case we’re blaming the wrong guy). Then, I’d put half of the sample in the fridge and half in the oven.
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@ketchito Dediğiniz gibi deneyimi opaklaştırıcı kullanmadan yaptım ve viskozitem gayet iyiydi.
Bu opaklaştırıcının ticari adını önerebilir misiniz? -
Biraz araştırma yaptım. ALKAMULS® 504 / V (etilen glikol distearat) buldum. ancak bu bileşen aynı zamanda sedef görüntüsü verir.
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You can try Euperlan PK 711 Benz if do not mind Cocamide MEA in your formula. It works well with cold-process.
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Thank you very much for your suggestion, butthe firm does not want pearl appearence. should only be opaque color ::smile:
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@filiz Lamesoft TM Benz is an opacifier (not pearlizer) that can replace styrene based opacifiers very well. You can give it a try.
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@ketchito thank you
I tried lamesoft. but it did not dissolve as I added 0.5% to the shower gel base afterwards.Do you think it works if I dissolve it with a little bit of formula water and add surfactants later?I added 1% essence but the viscosity is broken again. It was worked out in harmony with Essence shower gel. I can’t find what to do.
any suggestions? -
may ı change surfactant groups? or percentages? is it works?
when ı use opacifier and high level of essence (%1-2%), the viscosity decreaes. ı need to solve the big problem -
@filiz Two things come to my mind:
1) make a premix of Coco glucoside with the Essence, mix it till it gets clear, and then add it to the batch,
2) try replacing Sodium chloride by Cocamide DEA (or similar, like MIPA or MEA), or by Crothix Liquid (or Versathix)
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What do you mean by “essence”? Are you talking about fragrance oil? Adding this always decreases viscosity. Often, by a lot. Salt thickened products are quite unstable in viscosity, the slightest thing messes them up.
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@ketchito
thank you very much. ı mixed coco glucoside with essence and add it end of the process. ı solved the blur problem.
but the viscosity is too low with 1% shower essences. ı can not increases the salt amount.
ı want the formula stay same but ı need to increases the viscosityI have very little time left to the production date of the product
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This is the ongoing problem with relying on salt thickening. I found it pretty much impossible to make a product of a required viscosity using salt alone. You will probably have to add thickeners.
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Should I replace c12-13 alkyl lactat with cocamide DEA? Or would you have any other suggestions?
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Same problem. CDEA is not a thickener.
Thickeners: CMEA (slightly), PEG-150 distearate, methyl cellulose, glucamate VLT, certain gums (poor sensorials), carbopol types (formulation problems) -
@Belassi Thanks for your comment,I have this problem too. I was going to make creamy shampoo with cetyl alcohol and PEG 150
Distearate.I mix them and add to water phase in 70 c. the interesting
point is the solution became transparent and clear, however i used cetyl
alcohol. i don’t any idea about that. The thickener has done correctly without being creamy. Then i made another shampoo with
PEG 150 Distearste, I add cetyl alcohol at the end of process and it
was creamy WITH LOW VISCOSITY. would you like to comment ?Thanks in advance -
would you like to comment ?
- Not really. This is someone else’s thread. I saw your question and all I can say is, cetyl alcohol is not found in commercial shampoos, do you think there may be a reason? -
@Belassi yes, you are right, but i used this shampoo and i feel great, That is the most reason i want to use it, My goal is making creamy shampoo. Anyway Thanks for comment taking your time.
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thanks for your comment. I sent some of my shower gel to my essential oil company and they worked again for me. Viscosity isn’t bad right now, but I can’t be sure without stabilizing.
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