johnb
Forum Replies Created
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Use the search facility (top of page right adjacent to the box marked “Go” and then press Go). You will find more pomade formulations than you could have dreamed about.
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We are unable to help unless you provide some details about this.
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Yes but as with all new formulae, it will need testing for antimicrobial efficiency - and other things such as chemical and physical stability.
A mix I used to use as a general purpose preservative was a mix of benzoic acid and phenoxyethanol.
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You need to completely reformulate to produce anything remotely transparent.
The essential oil content is far too high (this has nothing to do with the clarity of the product, though).
Do you have reasons for the ingredients to be in such odd quantities?
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it doesnt have email?
Lubrizol is a very, large company with many divisions. The problem with sending a large company an email is that because emails are personalised they can easily get lost in the system.
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I still don’t understand why this is so important. I assume this requirement has some official basis in your country. I cannot see a reason to set up complicated analytical procedures to detect a material which is of little or no concern to most of the world.
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I think @Bobzchemist raises good points and I disagree that he is confusing the discussion.
At the risk of prolonging this seemingly endless subject, why are you so concerned about 1,4 dioxane? If you have a client/customer requesting the information, and in the absence of standarised analytical methods, it is their reponsibility to offer a system of analysis acceptable to them.
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Google and Wikipedia are your friends
https://en.wikipedia.org/wiki/Silicone -
Anything bought as a laboratory reagent will be expensive.
You can be certain that P&G or other commercial users of the material don’t pay even one tenth of that price - even for the ScienceLab so-called bulk quantity.But, Belassi, you seem to have missed the main point of my post which is the ease (or not) of availability of samples.
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You are now asking a different question to the original.
I have never come across “powdery essences”.
The solvent I have used most often for dissolving perfume compounds is di-isopropyl ether in a distillation technique of my own design using a modified Cocking & Middleton apparatus. I doubt this would be suitable for dioxane. The C&M apparatus is illustrated here http://www.glasschem.co.za/products/glassware/water-estimators/item/determination-of-essential-oils-in-herbal-drugs and its use is described in the British and European Pharmacopoeiae (as well as elsewhere, probably).
You really need to take a course in analytical techniques to find this out properly.
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You need to make a mixture of stearyl alcohol (5 or 6)-ethoxylate (this is a soft solid) and stearyl alcohol 25 ethoxylate (this is a hard waxy material). The first item gives longevity to the block, the second the hardness and handle-ability. The more of item one, the longer it will last but the softer it is. That is the reason that some of the longer lasting blocks are wrapped in a water soluble wrapper. The colour is most commonly given by FD&C Blue No1 (CI42090).
These materials are not commonly available to the home user. Do you have a source of supply? If not, there is little point in me going further.
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Avoid using a glass electrode pH probe in solutions of cationic surfactants. It can happen that the surfactant can deposit on the surface of the very thin glass of the electrode and thus wreck it.
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My experience of obtaining samples has been different to most of the respondents here. It’s possibly because I am (was) known to most of the industry in the UK and that I have worked for some very large (ergo very influential) companies including Unilever.
A notable exception was when I tried to obtain a sample of zinc pyrithione (Zinc Omadine as it was then) from Olin Mathieson when the first P&G Head & Shoulders patent on the material expired. Even though I was with Unilever at the time, Olin M. were reluctant to the point of refusal to even speak to me as the company I represented was “too small for their consideration”. Hmmmmm! It wasn’t that Unilever were setting up in competition with P&G, all they were wanting to do was produce sample shampoos for perfume testing at the behest of P&G.
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I apologise, please ignore my previous post here.
I should have said similar to traditional vanishing cream.
The final appearance and texture does not develop immediately - it may take several weeks for that to occur.What is the formula you are using?
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This type of shave cream is basically similar to the traditional cold cream.
What is your formula?
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I do have experience in the analysis of fragrances and essential oils by numerous techniques.
My practical experience does not, however, extend to the analysis of dioxanes or any related materials mainly because it has not been a requirement anywhere to do this and I doubt that it is of very much concern to others in the cosmetics industry at the present time. If or when the dioxane content of cosmetics products does become regulated then the relevant authorities will produce the analytical methods they require to be able to comply.
The way to avoid dioxanes is to avoid the use of ethoxylated raw materials in your products or, at least, ask the supplier of ethoxylated raw materials for a certificate of compliance for dioxane content of their product.
Remember also that many thousands of tonnes of 1,4 dioxane is still manufactured annually as an industrial solvent with numerous end uses - some even ends up in consumer products.
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EGDS will not form a pearl effect in a soap bar ergo there is no point in including it.
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I feel you are being very unfair by posting that negative response.
We have done a lot of work on your behalf on this question and you ought to be able to put in at least some work yourself rather than just asking others to do it for you.
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Gluconodeltalactone and Sodium Benzoate is accepted by ECOCERT as a preservative in certified organic cosmetics.
A natural preservative that is a combination of a naturally occurring
food additive glucono delta lactone, derived from corn, and a food
grade preservative sodium benzoate, the sodium salt of benzoic acid,
along with a trace amount of calcium gluconate as a processing agent.We recommend that you optimize (determine through interval testing
the lowest effective dose) your preservative levels because all of the
successful trials were done at use levels between 1.0% and 1.5%.The above is from http://www.ingredientstodiefor.com/item/Gluconolactone_Sodium_Benzoate_GSB_/565
There are other commercial sources for this mixture.
It is a suggestion only . I have not tested it myself but it does remove some of the question marks over thiazalone preservatives.
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The oil will need refining to the same degree as is used for food or pharmaceutical grade oils.
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Soybean oil is a glyceride oil similar in compostion many other glycerides. You can use as a direct replacement for any of the common vegetable oils.
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That’s something you will have to try for yourself.
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SLS has already been dicussed as a non-desirable ingredient.
I continue to be uneasy about using Kathon CG. There are numerous antimicrobial presevatives available and I cannot understand why anyone should voluntarily use a substance which is a known contact allergen in any product.
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Unfortunately the pearliser has to be mica otherwise I would have used distearates.
Why?
I can never understand why people make life so difficult for themselves.
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Used as an opacifier.