[Abdullah]

This would not need high shear mixing so any amount is enough.

[Abdullah]

@PhilGeis @kbaddack STPP is there to make hard water soft. We have extremely hard water here. They are all well water.

Isn’t STPP supposed to make soluble complexes with water hardness?

[Abdullah]

Ingredients like SLS and parabens that have bad reputation are the best ingredients.

They have replaced SLS with SCI and parabens with other preservatives to look better in ingredients list. you can see their reviews, everyone says the previous formula with SLS and parabens was more gentle, better tolerated and much better than new formula.

[Abdullah]

What ketchito said+ Ethyhexylglycerin, 1,2-Hexanediol, caprylyl Glycol & Lavender EO all reduce viscosity

[Abdullah]

You can use some phenoxy ethanol or phenethyl alcohol

[Abdullah]

Is this a cleansing product?

What is the problem with pH 6?

[Abdullah]

Chemists corner has excellent courses. You can start there

[Abdullah]

You can use as much as you want

[Abdullah]

When oil separated, it always means your emulsifier is not enough or is not working.

[Abdullah]

CAPB is a skin irritant. But when it is combined with another skin irritant like SLS in specific ratios, they both become gentle.

Those allergens in lavender are allergen when used alone. But when those allergens are mixed with hundreds of other molecules in best ratios that they can have, wouldn’t it make a synergy and become not allergen?

Isn’t it like saying this shampoo has SLS and CAPB, as both are irritating the skin when used individually, this shampoo would be very irritating?

[Abdullah]

Is there any benefit from just Hyaluronic acid, niacinimide, glycerin, aloe, and panthenol in serum form for eczema?

[Abdullah]

If you name the products that you want to make we better know if we can do any help or not on that specific product.

[Abdullah]

What do you mean by ”PE 9010, it was a disaster. ”?<div>

<div>

Was it not dissolving in your product? Destabilizing your product or irritating the skin?

Is the product completely water based or emulsion?( Emulsion has oil too.)

PE 9010 is water soluble. Just heat the product and PE 9010 a little bit before mixing, premix it with glycerin or propylene glycol, use high shear or mix for a bit longer to dissolve it properly.

airless pump is very expensive. That is why no one uses it. You can improve your formula for protection. If no formaldehyde or CMI MI, then with your sodium benzoate, some phenoxy ethanol or Phenethyl alcohol+ may be some benzyl alcohol is very important for bacteria. You can also use glycols.

60% glycerin?

</div></div>

[Abdullah]

Thanks

I don’t have any problem with EDTA but is it effective at pH 4?

[Abdullah]

Sodium hydroxide is readily available and cheaper. Why should i use tea? <div>

pH is 4 so EDTA wouldn’t work. Im i correct?

</div>

[Abdullah]

@ketchito yes. Actual product is clear. But after 100x dilution in hard water they all became turbid.

[Abdullah]

@ketchito i made two batches. One with 0.5% STPP and one without STPP. Both were clear but after 100x dilution with hard water became cloudy.

Then i added 0.01% citric acid to this dilution and they became clear.

What can be happening?

[Abdullah]

@ketchito i made a sample without sodium hydroxide.

Product was clear. pH was 10. After 100x dilution pH was 6 and precipitation happened again.

For buffer, is citric acid+sodium hydroxide an good buffer?

[Abdullah]

Thanks. I will make a sample without sodium hydroxide and see what happens.

I was adding sodium hydroxide to keep the pH of wash water @~10 when it is diluted during use. Without sodium hydroxide pH goes down to 6-7 when diluted during use.

An expert here said STPP works best at higher pH and is almost useless at pH 6-7. What is your opinion on this?

[Abdullah]

No it is not for acne. It is to get all it’s benefits as much as possible

[Abdullah]

Thanks for the link.

Of course these enhances penetration of niacinamide. But do we need to penetrate it deep in the skin to do it’s job or superficial is enough?

[Abdullah]

Those HLB doesn’t matter. It can have different HLB from same company but different batches.

[Abdullah]

Hi <div>

Some questions if you can answer.

1. Was that free shipping for one consumer retail purchase or bulk?

2. What happened to private labels globally?

3. What happened to your local customers?

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[Abdullah]

That is good

Thanks a lot

[Abdullah]

Actually i was just testing both ais.

I think deepseek answer is 5ppm STPP to 300ppm hardness. Not 1ppm hardness. This is why it confused me.