[Abdullah]

Formula A is also has more viscosity

[Abdullah]

Can i edit the title to ” which preservative is stronger for this cationic emulsion?”.

It hasn’t been written when i wrote it.

[Abdullah]

Deformulating/Reformulating what type of products? Please specify it.

Different types of product need different types of expertise and knowledge.

For example if you want to Deformulate/Reformulate a soap then our friend @mikethair has experience.

[Abdullah]

Thanks a lot for the file.

By the way, what is manufacturing/storage issues that has caused the recall?

[Abdullah]

Happy new year to all you great people

[Abdullah]

Maybe it is Disodium/Sodium Cocoyl Glutamate. Remove it and see or dont reduce pH below 6 and see what happens.

[Abdullah]

This product has 1.5% of leaf powder and that powder has 10% active. So if you use 10% of this product you will get 0.15% leaf powder and 0.015% active ingredient.

[Abdullah]

@Adamnfineman @Aniela thanks a lot.

That had confused me too.

[Abdullah]

Made 3 more batches

1% SLS: 5% FA

0.8% SLS: 4% FA

0.6% SLS: 3% FA

pH was 12 for all of them.

Will check the stability

[Abdullah]

Liquid SLS has pH ~6 and no citric acid needed to adjust it’s pH.

1% powder SLS solution in filtered water has pH ~13.

How can i calculate the free base?

1% SLS powder needs 0.8% citric acid to reduce pH to 6 and during this it creates a lot of foam so it may have a lot of free base.

I will make another batch without citric acid and see what happens.

[Abdullah]

It is interesting that most of products were contaminated with gram- , a few with gram+ , very little with candida, and nothing with mold.

Does manufacturing contamination happen in this order like mostly gram- and and very little fungi or it is just a coincidence that they were contaminated like this?

[Abdullah]

Yes and i think it is the easiest to kill too. Just add some EDTA+ phenoxy or a formaldehyde releaser and it is dead. I don’t know why they haven’t done so and is there so much gran negative.

[Abdullah]

https://ifscc.org/abstracts/conditioning-by-cationic-polymers-on-asian-hair/

Here it is.

It also hase this formula for it

RSSL = Silicone peak height (Si–CH3) at 796.5 cm–1/

Hair reference peak area at 940.1 cm–1 to 919.9 cm–1

ifscc.org

CONDITIONING BY CATIONIC POLYMERS ON ASIAN HAIR - IFSCC

CONDITIONING BY CATIONIC POLYMERS ON ASIAN HAIR - IFSCC

[Abdullah]

Thanks 🙏

[Abdullah]

Thanks

Is there any method of adding this silicone emulsion to prevent this interaction ?

By ”rheology modifier” you mean thickeners like hpmc, xanthan etc or cocamide MEA?

[Abdullah]

Use use ctac/FA at 1/4 ratio for Maximum viscosity

[Abdullah]

Is this a conditioner?

What is the percentage?

What is Cetrimonium alcohol?

[Abdullah]

Thanks

[Abdullah]

Wouldn’t that extra anionic surfactant solubilize that coacervate?

I am using SLES 70% so i have to add it first in water to dilute it.

I mix my guar with FO and then add it to main tank. What is your opinion on that?

[Abdullah]

This supplier said LABSA is more sensitive to hard water than SLS but another supplier like Stepan says SLS is more sensitive to hard water than LABSA

[Abdullah]

Thanks a lot

[Abdullah]

Can i ask how can we preserve a very simple serum that is only 0.3% xanthan gum in water without adding a synthetic preservative and chelator?

[Abdullah]

@chemicalmatt thank

What is the effect on micelle chare?

[Abdullah]

So what will change in CAPB is pH is above 6.25?

Nothing?

[Abdullah]

Does this mean at pH above 6.25 CAPB will have negative charge?