[Abdullah]

Thank for this update.

I am confused with everything i do in forum right now but maybe because it is new.

Here are some of my suggestions that was better previously.

1. An introduction in front of the name of users to know better if he is a regular member, student, professional chemist, professional formulator and etc like before.

2. I made a post but i couldn’t upload a picture in it. Not in actual post, not in comment.

3. When i was adding tags to my post, it wasn’t suggesting previous tags when i was typing like it did before. This may create unnecessary new tags.

4. In “recent discussion” section, it only shows 5 discussions, if for example 8 new discussions has been started and i haven’t checked them, how should i know that?

5. How should i know in general, which discussions i have opened and which i haven’t.

Thanks again

[Abdullah]

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[Abdullah]

You need to increase dimethicone and guar

[Abdullah]

Yes

[Abdullah]

It doesn’t have negative effect but doesn’t have positive effect too.

[Abdullah]

Maybe blending these emulsifiers improve skin feel.

SLS on it’s own is the harshest surfactant but i saw somewhere that a blend of SLS and SLES has better after feel than SLES or SLS alone. 

[Abdullah]

You are welcome

[Abdullah]

SunilHiwarkat1965 said:

@Abdullah, Thank you very much for corrections. I should have checked COA of the supplier. Truly a very big mistake. 

Abdullah said:

Molecular weight of cetearyl alcohol 30/70 is 250. 

Below 1:4 ratio the viscosity will be very low. 1:4-1:6 is best for viscosity and stability.

 For each % BTAC 1.86% fatty alcohol gives you 1:3 molar ratio

Do you mean active BTAC ?
Would you pl.don’t mind to explain me  the molar ratio calculations. I shall be very much obliged if you can spare some time.That will clear my basic concepts.
Thanks in advance 

Yes active BTAC surfactant. 

Every one calculate it their own way. 
I do it like this.

Suppose A is emulsifier, B is fatty alcohol.

A÷0.molar weight of A×times of fatty alcohol×0.molar weight of fatty alcohol.
This this my formula 

Now suppose A is 1% active BTAC molar weight  404.15596. B is cetearyl alcohol molar weight 250. 
The ratio you want to be 1:4 4 time the amount of fatty alcohol. It will be calculated like this.

1÷0.40415596×4×0.25= ~2.5 fatty alcohol.

So for each % of BTAC at 1:4 molar ratio you will need ~2.5% fatty alcohol. 

[Abdullah]

Molecular weight of cetearyl alcohol 30/70 is 250. 

Below 1:4 ratio the viscosity will be very low. 1:4-1:6 is best for viscosity and stability.

 For each % BTAC 1.86% fatty alcohol gives you 1:3 molar ratio

[Abdullah]

Guar gum doesn’t need heat but it needs high shear to dissolve

[Abdullah]

Heat it, mix it with high shear mixer and cool it.

[Abdullah]

Why you are not using a polymer like HEC or HPMC for viscosity and stability? 
Like in cream and lotion, it has dramatic effect in conditioner viscosity too.

I get enough viscosity with ≤1% BTAC , 2% fatty alcohol and some polymer. 

[Abdullah]

Or use lauryl glucoside if you have to use that in such high quantity. 
Lauryl has better emulsifying, better viscosity and less foaming than decyl glucoside.

[Abdullah]

11% decyl glucoside can be irritating.

[Abdullah]

ccchem said:

@Abdullah thank you. Yes, this is what the supplier recommended. I am now wondering - if this is indeed due to the presence of iron, will the long-term stability be affected?

I don’t know about that part.

[Abdullah]

What is the pH? 
Do you you know what each ingredient is doing in your formula? 
For example what is 11% decyl glucoside doing there?

[Abdullah]

ccchem said:

@MarkBroussard @chemicalmatt @ngarayeva001

Thank you very much for your suggestions. I was able to resolve the clouding issue. 2 months later, the sample is still clear.

In my quest to try out different solvents I found 1,3 propanediol from a local supplier. However, during my experiment the propanediol turned reddish purple as soon as I added SA to it. My research tells me that SA will form a red/purple complex in the presence of iron. Has any of you experienced this?

Yes. Before adding salicylic acid in water add a chelating agent like EDTA first in water. 
Although adding EDTA after color formation can also remove the color.

[Abdullah]

Usually most chemists sell Shampoo formulations. Is don’t expect them to give you the best they can for free. But thanks to all of them, they help each other here if they have any problem in their formulas for free. 

In your formula if you increase pq7 to 2ml it will solve some of your problems. But if you want me to give you the best formula that i can make, i will not do that for free. 
Hope you understand it. 

[Abdullah]

I will start with 0.5%.
Decyl glucoside reduces viscosity.

I will add it at the end after everything else has been mixed.

[Abdullah]

Polyglyceryl 10 laurate

[Abdullah]

Do whatever you want. 
I make a lot of samples too. Sometimes it is worth giving to people to try, sometimes it is not worth it. 

[Abdullah]

I think first two has better cleaning

[Abdullah]

chemicalmatt said:

Agreed with all: still good to use but neither vegan nor Halal. An aside: should you ever want to buy tallow-based glycerin USP, Kosher or non, you’ll pay twice the price for a special order with a two-week lead time, and then only through select distributors such as Rierden Chemical in Chicago (hometown of commodity tallow). This is why I start to steam every time I see greenies mention “vegetable glycerin” in their label copy and marketing blurbs. Listen up homeys: it is ALL Vegetable Glycerin!! Byproduct of biodiesel and palm & coconut oil fatty acid fractionation. ALL of it. So much veggie glycerin around they need inventive ways to use it up faster.

By Halal do you mean for muslims? 
I think it has no problem. 

[Abdullah]

I don’t know about this one but amodimethicone can.

[Abdullah]

It will be fine