OldPerry
Forum Replies Created
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Additionally, surfactants, emollients, amino acids, sugars. Different microbes eat a lot of different things.
To minimize the problems, use less. Keep pH out of growth range. Reduce water activity. Use closed packaging. Use chelating agents. And use standard, proven effective preservatives.
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If you have an open jar at elevated temperatures, you’re going to have a difficult time preventing evaporation (even with humectants).
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Losing 15% (even without humectants) is a large amount. How did you determine that amount? But the packaging could be a significant problem. Unless it’s an open jar there is no reason you should be losing that much water in such a short amount of time.
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What type of packaging are you using?
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@MarkBroussard - true story: when I was working on the VO5 line our marketing people wanted to launch a body wash. We just took the shampoo formula, adjusted slightly the ratio of SLS / SLES, changed color, fragrance and called it body wash.
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@Climatechangeanxiety - because, you know…marketing.
They convinced consumers that sulfates were bad and a more “natural” replacement is glucosides. So, they used them for their products. The fact that after a few years of using them glucoside were discovered to be significant allergens isn’t surprising. We have decades of safe use of sulfates. We don’t have decades of safe use of glucosides.
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@Pharma - great points. I’ll try to work them into questions for the panelists.
I’ve often thought it may not be a good idea to substitute farm land for cosmetic production. -
Hello @ozgirl - Yes, it will be recorded. As long as you sign up you’ll get an email with a link to the replay.
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@Pharma - Raw material supplier being misleading!? Say it ain’t so!
This is a good lesson for everyone though. Raw material supplier data should always be viewed skeptically. Not saying that they outright lie, but they certainly present the data in a way that is more favorable to getting you to come to the conclusions they want.
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@Climatechangeanxiety - adding more is not the best way to go about trying to figure out the problem. A better strategy would be to do a knockout experiment.
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I don’t believe it is banned in the EU if you have a prescription for it.
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I agree with @Pharma.
I would add that 5% phenoxyethanol is a ridiculously high amount. Typically, it’s not used higher than 1% -
I wish we got paid like rockstars in the industry! lol
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It depends on the formula. Usually cosmetic chemists are starting with an existing formula and trying to modify it to make it better/different. So in these cases, no. But making a completely new formula…it can be helpful, depending on the emulsion system you are using.
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No, Polyquaterniums are not heat sensitive. It’s usually more convenient to add them in the water phase as you heat it. But you can add it to the cool down phase too. That may make it go in the solution more quickly. Although if it is a powder that might cause “fish eyes” (globs of undissolved polymer) so you want to add it early.
The bottom line is that it depends on the system. But no, polyquats are not heat sensitive.
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It might help if you told us all the ingredients in your formula if you haven’t yet. Adding HPMC (methylcellulose) or Guar Hydroxpropyltrimonium chloride may boost the foam. If you have glycerin in your formula that will hurt foam so reduce that level. In the old days we would just use Cocamide DEA which worked great for that but alas, the ingredient has developed a poor reputation.
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@Margaret - Upfront I should say that this is just a personal opinion. As @JonahRay demonstrates, some people like (or at least tolerate) shampoo bars. For people who do, more power to them.
For me personally, I don’t think they deliver enough surfactant for me to feel they are getting hair clean. I don’t think they foam well enough, they are more cumbersome to use, and where they do touch the hair they leave it feeling “dry” or rough.
Yes, I think the main issue is that they do not deliver enough surfactant. They also do not deliver a consistent formula. While a liquid product can be a homogenous mixture, a bar soap is more like a box of Lucky Charms. In one handful you might get 10 marshmallows while in another handful you might get 2 marshmallows. Similarly, in one use of the shampoo bar you might get some of the panthenol delivered while in another you might get none.
But again, this is all just a personal opinion about the bar shampoos. Obviously, some people like them.
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All shampoo bars are crap compared to liquid shampoos.
If you keep the comparison to shampoo bars, I don’t know, I’d guess the coco sulfate version would be more effective but with all the oils in the bar, probably not. -
@Climatechangeanxiety - is it just your product that causes the reaction or do you have this reaction with Tom’s of Maine too? If no reaction with their product, what are the main differences between yours and theirs?
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Usually sodium chloride will destabilize an emulsion.
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You would have to test it. I don’t think it is a linear scale.
In case you were curious, here’s a study where you can see how much TEWL petrolatum affects skin. I’m not sure about the percentage they used though.
https://onlinelibrary.wiley.com/doi/full/10.1111/jocd.13163?casa_token=8tk7uwgXaPAAAAAA%3Amx8wnGE2NLHtJXc0ifT5_8tgzpyyl7A5d4SXvNv-la-DSxzelJlzCPH09paGgF8OD3MOjrjRVjCaMzw -
I believe this company could help you.
https://microchemlab.com/ -
@Pharma - Here is a running list of people who took the advice to use homeopathy and died. http://whatstheharm.net/homeopathy.html
There is real harm in following nonsense and pseudoscience when you don’t know that’s what it is.For cosmetics, sure homeopathy may not cause any problems like death but let’s not pretend it’s actually doing anything beyond placebo. Homeopathy is really no different than a belief in Santa Claus
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It’s also worth noting that the FDA specifically says you have to be able to prove the safety of your ingredients and that just because something is natural does not mean it is automatically safe.
https://www.fda.gov/cosmetics/cosmetics-science-research/product-testing-cosmetics#Who_s_responsible
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@Pritishah - With all do respect, Homeopathy is a fairy tale and not a real scientifically based concept.
Here is a good place to get started on learning the truth about homeopathy.
https://sciencebasedmedicine.org/reference/homeopathy/