belassi
Forum Replies Created
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Use a higher quality surfactant for the base. I hate SLES because it has horrible sensorials: short-flow.
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Opinions on Methylchloroisothiazolinone in rinse off products?
— Caused severe atopic dermatitis in both my dogs. Implicated in countless consumer complaints against the company, Hartz. Horrendous. -
No problem with it, just add to the oil phase.
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Don’t agree. Banned in many countries (including the UK)
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Normal. It’s soaping due to the emulsifiers. You can either change the emulsifier system or add some silicone.
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Yes, true, you’ll have to try it as two-part samples to see what is going on.
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I would first try a colour test. Make the water, say, blue, use a blue water soluble dye. And make the oil yellow, you’ll only need a tiny amount of oil-soluble yellow dye. Since blue and yellow make green, you’ll see immediately if any water has mixed with the oil.
And make the silicone red. Hopefully you’ll be better able to discern the composition of the layers. -
I make a gel product that is 100% aloe vera (using 10x liquid concentrate) and uses 0.8% Ultrez-20. It’s quite stable, no problems at all. I should think sodium benzoate would be adequate as a preservative at pH <=5, with appropriate use of glycerine / other glycols, proper production technique and airless packaging.
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It is meaningless to class acids or bases as “harsh”. When used to adjust pH they form harmless salts. Sodium hydroxide and chlorine, suitably combined, product table salt, a key item in our diet.
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Haha it’s Spanish. We both live in Latin America. I’m good, thanks. I have to close the lab temporarily because we are moving home.
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I gave up on resveratrol. In order to get any decent percentage into solution I had to have a high percentage of alcohol in the cream. I think I ended up using a COSMOS compliant formula, no preservative (the ethanol level was high enough) but inevitably, even with an airless container, the ethanol migrates out and the ethanol percentage drops, putting preservation at risk, and the resveratrol forms clumps, most unpleasant.
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I just can’t imagine the difficulties of using acetic anhydride for anything, if not wearing a complete biohazard suit.
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I’ve done that reaction but only with sulphuric acid, you will have to try it for yourself.
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First, D5 has already been severely restricted in use levels. 4.4% does not comply.
Second, do you mean actual cocoa? Your cream is a dark brown? What is “olive m”? -
You can make creams with ethanol but you’d need to use airless packaging.
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Search the patents.
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I can’t believe that so far nobody has noticed that this is a completely fake product. Look at the fake brand (trying to copy L’Oreal) and the incredibly stupid product description on the package in rubbish English.
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Change the colour. This is a common problem.
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Sounds terribly expensive.
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This does not surprise me. I just read an article in the NY Times about Compounding Pharmacies. Apparently a lot of what they make is dangerous and unregulated and there have been a LOT of lawsuits.
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It’s a different fragrance from the previous one. We had run out and the supplier had changed it. Yes, it could be the cause.
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Could it be ostwald ripening?
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I forgot to measure the temperature but I could comfortably hold the container without gloves. Probably about 45C.
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Use cetearyl rather than cetyl. The former acts as a co-emulsifier, cetyl doesn’t. Your last message, the preservatives are overkill. Just use the first two.
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It seems to me that you’re not using sufficient emulsifier. It seems likely that there’s a very high amount of electrolytes present.
Also, I doubt that even 0.1% of resveratrol powder is going to be soluble in this combination.
Method 2 sounds horrible with 1% xanthan gum, gummy gummy gumdrops.
I would use method 1 but increase the % of both emuslfiers.