OldPerry
Forum Replies Created
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How did you become convinced that Phenoxyethanol is causing the problems?
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@Gunther - I was specifically looking for solutions that do not require any heating
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Typically, hair products have a lower pH…say 5.0 - 5.5.
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@smc - I think the thread you are looking for is here.
https://chemistscorner.com/cosmeticsciencetalk/discussion/comment/27511#Comment_27511But perhaps you could start a new conversation about the topic.
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@Bill_Toge - interesting. There was a famous hair care brand in the Chicago area who used Kathon in every formula they had because it was the only thing that would kill an in-house microbe that had created a biofilm on their filling equipment.
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What does the separation look like? Is it a thin layer at the top or thin layer at the bottom or something else?
There is nothing obvious to me but maybe the guar is separating out as it’s not hydrated well enough. But also, it doesn’t look like you have a solubilizer for the fragrance so that could be an issue too.
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Saponins?
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@”Dr Catherine Pratt” - As a consumer, I don’t think I would believe a foamless toothpaste was working. I need that foam as a signal of efficacy.
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Yes, emulsions feel better and you are able to dilute the oils. So, it reduces costs and can help ensure consumers don’t leave too much oil on the skin.
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It is a conditioner. Although I would add that it is not without surfactants.
These are all surfactants.Stearamidopropyl Dimethylamine,
Dicetyldimonium Chloride,
Behentrimonium Methosulfate,
Ceteareth-20They aren’t particularly good at cleansing however.
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If you are going to comment on an old discussion, you have to first click on the box. This prevents really old discussions from coming back up to the front unless the person really wants it to.
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@Window - You are mistaken about formaldehyde donors being banned in the EU. They aren’t. The ban applies to formaldehyde & methylene glycol. Things like DMDM Hydantoin, Imidazolidinyl Urea, etc. are perfectly fine. http://ec.europa.eu/growth/tools-databases/cosing/pdf/COSING_Annex%20V_v2.pdf
And the EU banned 5 parabens, which also happen to be 5 parabens that nobody really used in cosmetics. The primary parabens used in cosmetics have not been banned or even restricted more than they ever were.
@MarkBroussard - You can see their ingredient lists here.
http://www.nae-erboristeria.com/en/home.htmlThis just seems to me a case of marketing decisions (to go after organic / vegan consumers) are taking precedent over product safety. Alternative preservatives they have to use to meet the marketing positioning do not have nearly the safe & effective track record of standard preservatives.
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5% seems reasonable - but it depends on what else is in the formula and product aesthetics and stuff like that.
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Interesting study. These are just the kind of results you might expect from a preliminary investigation. From my view, this is a starting point, not proof of anything. They had 24 test subjects and got some interesting data. I’m highly skeptical of this type of research though since it’s been demonstrated that over 60% of studies in the field of psychology cannot be replicated.
But even if the results of this study hold up with replication, this says very little about topical application of the ingredient.
It’s good that you’re investigating the claims & asking questions. I’d encourage you to continue to collect data and stay skeptical. It’s more important to know what is true rather than to verify what you want to be true.
I think it would be great if CBD demonstrated some real benefits from topical application. I just haven’t seen it yet.
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I was speaking from the standpoint of topical application of CBD. I have not investigated the topic of CBD ingestion enough to have an opinion.
What specific benefits do you believe CBD has?
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There could be lots of reasons you don’t receive a response.
Perhaps people don’t think that you are a serious entrepreneur or maybe that you are inadequately funded. Do you have enough money to pay for someone to formulate for you?
Perhaps your request is too complicated or not chemically feasible. For example, if you are looking to make a shampoo that grows hair, nothing like that exists.
Or maybe you’re not located near enough or people are just busy with other projects.
A lack of response could be due to a number of things. But I think primarily, you haven’t made your request in a way that makes people think you have a big enough budget to be a serious request.
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See this page. Click the “safety” tab.
https://cosmeticsinfo.org/ingredient/bht-0 -
@Kull_Axel - My starting opinion about any ingredient is that it has no noticeable effect. I would easily change my mind when shown scientific evidence. But I’m not impressed by anecdotal stories and marketing materials from ingredient suppliers.
What specific benefits do you believe you get from topical application of CBD? What evidence convinces you that these benefits are real?
I’m certainly willing to change my mind if the evidence warrants it.
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You could probably also use Carbomer EDT 2020 or Hydroxypropyl Methylcellulose.
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@Kull_Axel - If you were just buying CAS 13956-29-1 then the price should be pretty consistent. However, it’s unlikely that you are comparing the same ingredient. The ingredient from Sigma Aldrich is sold as a 1mg/mL sample in methanol. That’s the cannabidiol molecule. I’m sure there are other samples that are an extract from a plant diluted but they just call it cannabidiol because there is no standard.
But I agree with @@Belassi - whether you get an expensive, pure sample or some cheap diluted extract won’t matter much because you won’t be able to tell any performance difference anyway. -
There are typically not any antimicrobial preservatives in fragrances because fragrances are made up of oils & have no water component which is required for microbial growth.
Phthalates are not preservatives. They are used as fixatives in fragrance.
Yes, paraben-free and phthalate free are just label copy. You wouldn’t put a paraben in a fragrance oil.
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You could add your information to the discussion here
https://chemistscorner.com/cosmeticsciencetalk/discussion/137/need-formulating-services-here-are-some-contacts#latest -
Sorry if my response came off as sounding irritated. It wasn’t meant that way at all. I wanted you to get answers that are helpful but without a specific question, it’s hard to know what information would help.
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Your question can’t be answered adequately unless you share all the ingredients in your formula. For example you may not even need an emulsifier.
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Sorry, those weren’t meant to be serious replies. Just humorous puns.
There is no good serious reply to your question because I don’t believe it is generally true that chemists are weak at math. In fact, to become a chemist you have to complete a year of Calculus. You have to take Physical Chemistry which is applied calculus. And you have to take Statistics.
But formulators do not have to use much math beyond calculating percentages of ingredients and working out the statistics of a market research study. So that could be a reason that you don’t see a lot of brilliant math coming from cosmetic chemists.