OldPerry
Forum Replies Created
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It is not soluble in water. The best solvent for it is PEG400. See this paper.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4427559/I don’t think the glycerin technique will help but I haven’t tried it.
Resveratrol has a melting point ~260C, it is not heat sensitive.
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First tell us what you mean by the word “organic”. To a chemist, anything that contains hydrocarbon molecules is organic. You might mean something different.
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Propylene Glycol is not in your ingredient list. But if 5% is in there, then you need to add more.
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Try a silicone. Dimethicone copolyol perhaps.
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Yes, clay is going to absorb some odors better than starch so it is not surprising that it makes a difference.
Personally, I think not including a preservative in any system is a bad idea.
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Just to be clear, honey is not a preservative. The only reason honey is self-preserved is because it has a low water content. If there is water in the system, the potential for microbial growth is real.
There are 2 things required for microbial growth, food and water. Honey has food but no water. Similarly, bottled water typically doesn’t need a preservative because there is no food.
But once you mix food (honey) with water, microbes can grow and you need a preservative.
Whether you need a preservative or not just depends on your system & that can only be determined by testing.
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This depends on what you mean by “organic” and what standards you are following. I don’t believe following the USDA definition of organic that a saponified oil would be organic. But some people start with organic oil, then during production have a saponification reaction that leads to the final product that can still be called “organic.” However, you should check with a lawyer or a regulatory expert on this.
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Yes. You need to follow the FDA monograph for hand sanitizers. And for production, GMP.
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For viscosity and foam, I think you will get better results from Cocamidopropyl Betaine when coupled with ALES or SLES. For mildness, I’m not sure.
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@karlyip - this is a question for a lawyer or a regulatory expert (neither of which I am).
You would have to answer the question “what is your purpose for adding the blueberry extract?” If your response is that you are adding it as an antioxidant, then you’ll need to be able to demonstrate that it works in your formula as an antioxidant.
In my opinion, this comes off as just trying to get around the law & I would advise against it. However, there may be regulatory experts who disagree with me.
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“Typically, this is done by adding some glycols.”
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See this post about doing a salt curve analysis.
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Increase BHT level or try a different antioxidant.
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Most people use Cocamidopropyl Betaine. But whether that makes it better or not is a matter of what you mean by “better”. Better for what characteristics?
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Yes, but you have to watch your pH (keep it low) as the ingredient can react with the steel containers and cause pitting.
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Yes, likely just a spelling error. My guess (based on the other ingredients) it should be Sodium Laureth Sulfate.
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Putting essential oils near people’s eyes doesn’t seem like a good idea.
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The problem you are experiencing is called the “cloud point.”
To solve it you have to find a way to reduce the cloud point of your system. Typically, this is done by adding some glycols. -
Disodium Laureth Sulfate doesn’t exist, so Sodium Laureth Sulfate will work better.
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Compare it to the specifications listed on the Certificate of Analysis.
Did you get one of those?So, if this was your ingredient you would conduct all the tests listed in the characteristic / method column (e.g. peroxide value, specific gravity, etc.) and you would see if the raw material still met the original specifications. If it does, then you could probably still use it. If it doesn’t, then don’t use it.
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If you are putting the blueberry extract in your formula for the color, then that would be illegal as it isn’t an approved colorant. You can say it is an antioxidant but if the color of your formula is in any way important for your marketing, then it would still be illegal (in my opinion).
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Just looking at your formula, I will offer this advice.
You have too many ingredients. Start simple. Fewer ingredients are better to start with because that way you know what ingredients are providing what impact. Once you get the primary function of the formula working, you can go back and add the “fluff” ingredients.
So, your formula should start with…
Water
btms 50CETAC 30cetearyl alcoholfragranceoptiphen - preservativeIf you make this formula and it doesn’t give slip, first try increasing the level of BTMS and CETAC. If you want to add other ingredients like the ones I list below as “claims” ingredients, only add ONE at a time. That way you know what effect the ingredient has on the formula.These are all “claims” ingredients that aren’t expected to provide much additional benefit - honeyquat, dl-panthenol, pumpkin seed oil, daikon seed extract, virgin coconut oil, shea butter, mango butter, vitamin e, rosehip seed oil.
For example, if you are including CETAC & BTMS, any effect that Honeyquat could provide on its own would be completely overwhelmed by those other ingredients. Think of it this way. Imagine you are painting a wall. Using Honeyquat is like painting the wall with a tiny jar of liquid paper (white out). It will cover the wall but it’s really hard and takes a long time. Using CETAC is like painting the wall with a large brush and a bucket of paint. It is pointless to use both ingredients.
The more ingredients you put into a formula, the more complicated the system becomes and the less likely you are to be able to make little tweaks to get some improved effect.
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@RDchemist15 - Great point. That is also another reason you would see multiple preservatives listed.
@Belassi - I completely agree with you. I hope I did not give the impression that I thought it was acceptable behavior. I was quite surprised when I learned that this type of thing went on at some facilities.
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The world of contract manufacturing isn’t always pretty.
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It’s difficult to say for sure but it may have nothing to do with the formula and more to do with their production facilities.
You see, sometimes a filling line can get contaminated with a “house bug” that forms a biofilm which is resistant to cleaning. Every batch you run through that filling line can potentially become contaminated with little spores that break off as product flows through. CIT / MI is very good at immediately killing off these types of microbes. So, some factories will just put CIT / MI in every formula because it is used at a tiny level, is effective, and rarely affects stability.
Now you might be wondering if CIT / MI is so good at killing why don’t they just clean their filling lines with it? Well, that’s because while it can kill of individual spores, it isn’t able to kill off the whole biofilm.
That’s my guess anyway.