[em88]

Perry said:

@Microformulation - I was just wondering what plant could I grow to get Polyquaternium-10.

It’s a tree from the fam. Polyquaterniumeae.  :smiley:

MarkBroussard said:

@Perry:

Yes, that would be more simple … The Aloe & Oat Extract … those are for label appeal, just in case your dog can read.

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[em88]

Urea is not stable, and during this process will form ammonia and CO2. 
Once the CO2 is formed, the cream usually looks like cheese with holes  🙂
I don’t understand how the formula is stable at this point. Anyway, best thing to do (based on my experience is to reduce the amount of water as much as possible and add urea in the last stage of the cream preparation when it is already at room temperature. You should keep ac lactic and the pH around 5.5-6.5

[em88]

@Doreen, exactly! 
From the Seppic channel regarding geltrap, the oil phase is added to the water/gel phase, while in the ulprospector video it is done the other way. Adding the oil phase to the water gel phase is easier to be done in the industrial scale

[em88]

Dtdang said:

@em88, do you have the link ?

I believe you want the link for the article I mentioned?
https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1600-0536.2011.01951.x
Octyldodecyl Xyloside is part of easynov, not sepiplus 400.

Dtdang said:

@EM88
I just try another small batch with only Sepiplus 400 and Caprylic Capric Triglycerides. Cream looks great.

I’m sure about this and the sensorial effect should be even better. 

Dtdang said:

@EM88, after reading article, I will email to SEPPIC to ask the safety of Sepiplus 400. I like it because it works for small % amount of oils. It is great for eye cream.

Sepiplus 400 can be used for making gels and o/w emulsions (creams). Indeed it will work for small amounts of oils. Glad to hear that you have great results.

[em88]

I don’t think you really need sepiplus for the geltrap. All the work is done by easynov. I think just by adding polyacrylate in the water phase should give the same result.
I haven’t used sepiplus 400, but I’m pretty sure is just an other great product from seppic.  

[em88]

Dtdang said:

Only I concern about safety bc I don’t have safety records of this ingredient 

There is an article regarding Octyldodecyl Xyloside “Octyldodecyl xyloside: a novel contact allergen”

[em88]

I’ve red about geltrap. It is a combination of sepiplus and easynov.
Since you tried already, what is the difference in the end result between using easynov alone and easynov+sepiplus? 

[em88]

BeardlyGentlemen said:

@88, I look what i get in my country, this is 3 different lanoline: 1) water free lanoline, 2) lanoline and 3) dry lanolin. What can i use, thanks for answer.

I’d go for anhydrous lanolin. First choice. 

[em88]

BeardlyGentlemen said:

@em88 i yyet dont use lanoline, how to use him?

Lanolin is a viscous emulsifier that can absorb about 200% water. 
Working with lanolin is very easy, is similar as with petrolatum. 

[em88]

According to Stepan https://www.stepan.com/products/Surfactants/NINOL%C2%AE/NINOL%C2%AE-COMF-N.aspx CMEA can be used to formulate a liquid dishwasher. 
I also don’t think there should be any issue using CMEA

[em88]

I think that blend has a pH over 7. 

[em88]

Well, if you use lanolin and a small amount of water, you can make w/o emulsions pretty easy. 

[em88]

fdbaptista2017 said:

What should be the cause of pH dropping?

It depends on the ingredients you are using.
Maybe a buffer can solve your issue. 

[em88]

mehrzadkia said:

Hello everyone,
Is this statement correct?
The type of an emulsion (w/o or o/w) is determined by the type of the emulsifier (and its solubility in a certain phase), not the ratio of the hydrophile and lipophile compounds in the emulsion. 
Thank you.

Well, it is correct. The type of an emulsifier indicates its solubility, so I would remove the “and” in the parentheses.
Regarding the ratio of hydrophile and lipophile in the emulsion, technically it isn’t a criteria to determine the type of emulsion, but in most of cases it suggests the type of emulsion. 

[em88]

There are many factors, temperature, mixing speed, bad weighting, you forgot to add the emulsifiers, you added something else by mistake, pH, different supplier for your ingredients. Do again the cream and pay attention. 

[em88]

That might be a problem. Make a stability test, normal and accelerated and check how the pH changes overtime. 

[em88]

Methyl Paraben: Propyl Paraben can be used in the ration of 3:1 or 2:1
0.2% parabens should be enough, still you should verify this with stability tests.

[em88]

https://www.theherbarie.com/files/resource-center/formulating/Emulsifiers_HLB_Values.pdf

[em88]

I have said this around here 🙂 HEC has incompatibilities with some surfactants. I learned it the hard way myself 
I simply removed HEC and solved the viscosity with NaCl. You may try HPMC instead. 

[em88]

I use both, but plastic disposable pipettes are the easiest to work with.

[em88]

ngarayeva001 said:

@em88, the most robust polymers I have experience with are Sepimax Zen and Sodium Polyacrylate. They both lose viscosity even with low level of Sodim PCA. Do you know any polymer that doesn’t?

I must say, Seppic products are amazing, but expensive. 
They use “Sodium Acrylate/Sodium Acryloyldimethyltaurate Copolymer” which seems to be very stable. I’ll look around if I can get my hands on that gelling agent.
I haven’t had much luck with sodium polyacrylate, still a great gelling product. 
Cellulose based polymers have been stable when I  have used them in the past. 

As per this thread, d-panthenol is an other alternative not mentioned here. 

[em88]

ngarayeva001 said:

Sodium PCA /Sodium Lactate + polymers =>goodbye viscosity.

Not all polimers behave the same, but I did face that issue many times. 

[em88]

Jdawgswife76 said:

@Doreen All of that info is zero to do with my post. 

This is a little impolite. Everyone thought from your first post that you have little experience. It is great to see that you are experienced in formulating, it will make it easier for us to help. 
Unfortunately you didn’t pay attention to all the posts. I told you three ingredients that can dissolve SA and if those are suitable for your formulation I’d suggest you to test them. Increasing the pH will also help in dissolving SA, in this case you can use trisodium citrate. We can not give you exact amounts of ingredients, but since the SA concentration is only 2%, it is an easy task to figure out by performing several tests. 

[em88]

chemicalmatt said:

There are others besides lecithin: cholesterol, Imulsify (orange peel polymer), both of which accommodate a high oil load. 

I was introduced in the beginning of this year to this emulsifier and if I’m remembering right it was used for cold process. I didn’t ask for the price because I was almost sure the price was very high. But once I saw it I immediately thought for making natural creams.
I’m curious if anyone used it?

[em88]

@jeremien, regarding gels, I was thinking to check crystal formation over time (while doing stability tests).
Thank you for information regarding the microscopes.