OldPerry
Forum Replies Created
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@nitrick - Stability this isn’t an exact science so a simple calculation like you did is a good estimate but should not be looked at as a rule. This article has some information about stability testing and labeling.
http://dgra.de/media/pdf/studium/masterthesis/master_engeler-plischka_c.pdf
For tolerance parameters that’s up to the company. +/- 10% seems reasonable but it really depends on what you are testing. I would say the difference matters when a consumer could reasonably tell a difference.
@Pete - That depends on the active ingredient. For most ingredients you would do some sort of analytical assay to determine how much of the ingredient is still in the product.
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Here is the procedure that I use.
https://chemistscorner.com/how-to-stability-test-a-cosmetic-formula/This is pretty much how most people do it in the cosmetic industry. The PCPC publishes stability test procedures but it’s pretty much like the one I posted.
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@Microformulation - I agree it is not cosmetic related. However, @Belassi is a frequent contributor to the forum and I think it’s ok for members to occasionally veer off topic & talk about something important to them.
I’ve created a separate category called “Off Topic” for things like this. Hopefully, there are not too many.
Does that seem reasonable?
If enough people don’t think it does I’ll remove the thread.
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@Pete - You would be hard pressed to show any effect when delivered from a standard cosmetic product.
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Some things will end up in the bloodstream, but most things won’t.
You’re lucky it wasn’t worse. This teenager found out the hard way.
http://www.nbcnews.com/id/19208195/ns/health-fitness/t/sports-cream-warnings-urged-after-teens-death/ -
Hello Pete,
The product that is supposed to work on mosquitos is the Victoria secret perfume. That means they only have to list the perfume ingredients as “fragrance”. They do have to list any solvents too but the active ingredient that would repel insects is some component in their fragrance. Fragrances are considered trade secrets and the only ingredients in a fragrance you have to list are ones known to be allergens.
Bottom line is that you probably will never be able to figure out what ingredient is responsible for repellency.
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We could create a “home care” category. As @johnb said some of the chemists here know about the homecare and I&I industry but not many.
I’m also not aware of any other such forum. Perhaps there is a LinkedIn group.
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It’s hard to advise without knowing what you mean by the term “strong and chemical”. I’d suggest you contact a fragrance house and see if they have a recommendation.
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@Bobzchemist - if we got a lot of posts like this I think it would make sense to remove them. But I think this one led to an interesting discussion (kicked off by you) so I’ll leave it.
I do think it’s a rather naive request and one that I wouldn’t personally pursue as it does minimize the hard work and skill required to be a good formulator.
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Since propylene glycol is water soluble it is simply going to wash away when the user rinses their hair. The only reason to add it to the formula is to either as a solvent for some herbal extract or as an ingredient to improve the formula stability.
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@mikethair - The directions…
“Uses: Add 2 drops to your palms, then slowly rub them together to warm and release the vapors. Loosely cup over your nose and breathe deeply and slowly for 30 seconds.”
You apply this product to your hands so that makes it a cosmetic in my view. If you don’t put it on your body then it would fall under EPA regulations.Yes, I would say that they make no real claims beyond “puffery”
https://en.wikipedia.org/wiki/Puffery -
The FDA would consider this a cosmetic. It’s really no different than a perfume.
As far as the claims go, I would say all the ones listed above would be classified as puffery. It’s filled with undefined terms.
For example, the phrase “to restore depleted energy reserves > helps restore depleted energy reserves” can mean anything.
What is this energy that they are talking about? It doesn’t have to be ATP it could just be a metaphorical spiritual energy or just the feeling of being energetic. Since the word energy isn’t specific, it can mean anything.The text is filled with qualifying words that make every claim vague, non-specific and easy to substantiate.
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I used Carbopol EDT 2020 for this. https://www.lubrizol.com/en/Personal-Care/Products/Product-Finder/Products-Data/Carbopol-ETD-2020-polymer
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Were these opaque containers? It could be UV degradation. And you can never discount microbial contamination (although the airless container reduces the possibility that that’s it)
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There is no required minimum. You just need enough subjects to convince regulators.
Here’s one that uses 10 subjects. http://www.dermatest.com.au/pdf/Eye%20Sting%20-Opthamologist.pdf
You could also ask a place like this what they use.
http://www.evalulab.com/en/clinical-testing/services/product-safety-testing/tear-free-product/ -
That’s an interesting strategy. I hadn’t thought about it that way.
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I would say put these discussions under ‘starting a cosmetic line’. If we get enough of these we could start a cosmetic marketing category.
1. Yes, the USPS does allow shipping of shampoos. http://pe.usps.com/text/pub52/pub52c4_017.htm
2. I don’t know. I don’t think so. It has to follow US labeling at the very least.
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That looks like a reasonable guess.
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You could conduct a knockout experiment.
I suspect the shea butter is actually reducing the detangling effect of other ingredients. Often you can improve formula function by removing ingredients.
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@heraklit - I’ve always found that fact to be troubling. Raw material suppliers should do a better job of SEO.
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I have made pearly shampoo systems with Cetyl Alcohol, Stearyl Alcohol, and even Mysityl Myristate.
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Great story. So much of success in cosmetics these days is due to your ability to be a good social media marketer. Have you tried Instagram? I’ve seen reports that beauty brands are doing great on Instagram and Pinterest
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<ad was removed> @MKnight
Yeah, this is pretty much a non-commercial forum. We have a thread for people to list their services. And if someone (in answering a question) wants to offer to have someone contact them for a paid job, that’s fine too.
But I remove ads when they don’t seem appropriate or are adding to the conversation. I also rely on the people in this forum to let me know if they see something like this. I try to keep up with every discussion but sometimes I miss some comments.
Thanks!
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@Belassi - oh my!
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@David - that’s a nice option. Wish we had that here in the US