[aicha10]

For the pH, it is 5.8. I dissolve the polyquaternium 10 in water, mix, and heat to 60°C until the polyquaternium granules disappear and the texture thickens. At this stage, I add the disodium laureth sulfosuccinate and the other ingredients gradually, adjusting the pH with NaOH, and then adding the Arlypon TT.

[aicha10]

The pH is 5.8. I dissolve the polyquaternium 10 in water, mix, and heat to 60°C until the polyquaternium granules disappear and the texture thickens. At this stage, I add the disodium laureth sulfosuccinate and the other ingredients gradually, adjusting the pH with NaOH, and then adding the Arlypon TT.

[aicha10]

For glycerin, since it’s a mild cleansing gel or ”cleansing oil”, I’m aiming for a formula that doesn’t dry out the skin after use. The surfactants I have available are disodium laureth sulfosuccinate, SLES, cocamidopropyl betaine, cocoglucoside, and Sodium Cocoyl Isethionate. The only humectant ingredient I have is glycerin and propylene glycol. If you can advise me on others, I would be grateful

[aicha10]

Thank you so much

[aicha10]

Is there a possibility that the emulsifiers we used could react with other ingredients to form crystals?

[aicha10]

I’m sorry, but what does PBSA mean?

[aicha10]

Thank you very much for your response. In fact, the crystals we obtain resemble pieces of glass. We have encountered the same issue with crystal formation in a moisturizing cream formula with the following composition:

Cetyl alcohol 2.8%

Glycerol stearate 1.5%

Stearic acid 1.8%

Ceteareth 20 2%

Cytostearylic alcohol 0.5%

Shea butter 1.5%

Coconut Oil 1.5%

Almond oil 4.5%

Argan oil 0.5%

Glycerine 3%

Propylene glycol 3%

Allantoin 1%

Water 75.7%

SALIGUARDCOS 0.7%

That’s why I find it challenging to identify the origin of the crystals. Is it the filters or other ingredients that are causing this issue?

[aicha10]

Thank you very much for your response. However, for the elimination tests, I cannot perform them at the laboratory level. This is because, by chance and without any explanation, we obtain crystals in the industrial batches (100 Kg). For small samples of 100 grams, we do not obtain crystals