johnb
Forum Replies Created
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“Victoria’s Secret” is merely a trade name and it doesn’t imply any special dispensation the manufacturer may have to avoid their legal responsibility.
However
If it is the ingredient list of the perfume components, you are out of luck.
Detailed lists of the ingredients of perfumes remain a confidential except for a list of known allergens which are declared as a matter of consumer safety.
A perfume compound will contain perhaps a hundred ingredients or even more - most of these with complicated chemical names - to declare each one would take up a huge amount of label space and be totally meaningless to the vast majority of consumers - and, more to the point, of zero interest or concern.
A perfume manufacturer (fragrance house) will reveal the components of a perfume compound to interested parties if there is a compelling reason (usually medical or safety) for them to do so but not the proportions of each one except in a “banded” format.
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What is the allantoin level?
What is the purpose of the aloe vera? -
What are the special properties of this in cosmetics? To me, the whole concept is in the realms of fairy dust (except that it’s fish eggs).
If it is important for you, why not process your own by buying food grade caviar from a fish seller.
https://www.futurederm.com/whats-caviar-extract-doing-in-your-cosmetics/
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Abdominal symptoms due to salicylate are usually due to gastric erosion by corrosiveness and irritancy.
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There has been no return of the initiator of the thread to give more details so it is pointless making any suggestions regarding a cure.
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The difficulty with what you’re asking is that oatmeal is a complex natural
mixture and it is thus almost impossible determine oat content in the presence of numerous other components in a mixture. I have offered an idea of determining oats based on the comparison of the starch content in product against starch in the original oat material. I really can’t see any other viable methods of determination. Measuring avenanthramides is not practical and still wouldn’t offer anything over measuring starch - perhaps even less due to greater precision necessary for detecting such minor amounts and the question of is an avenanthramide less stable than starch in the product being examined. -
If your supplier is being difficult, go elsewhere. Pearling agents are easy to obtain from a number of manufacturers.
I think also that you have been given wrong information re the nomenclature. I doubt it is polyethylene glycol stearate but ethylene glycol stearate
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Multiple freeze - thaw testing is a help as well.
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A long time ago I had a press made from a slightly modified dental or denture press.
We used it for pressing powder, but not face powder. If there is an oil binder in your powder you should be ok with the achieveable hand screw pressure.
I’ve seen presses similar to the one I had made on eBay http://www.ebay.com/bhp/dental-press it was modified by a local engineer.
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I know some stuff about homecare and I&I and I’m sure others do, judging from some of the replies I’ve seen.
As it’s a closely related discipline, it should fit in OK.
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I would guess that the product quoted in your starter has a Chinese origin. These are often not the highest or most desirable quality cosmetic products.
I would hesitate to suggest that a product with the formulation quoted is used anywhere on the face and especially not in the periorbita.
Can I suggest that you look online (or even visit cosmetic counters in big stores) to look at what other manufacturers use.
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Surface tension is only one of a number of parameters to be considered in emulsion stability.
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I am not aware of a “homecare” dedicated forum but there are enquiries here for such product types.
The thing with homecare and I&I products is that they are much more limited in scope and variation compared to cosmetic products. Genuine innovation in this marketplace is quite rare and usually subject to intellectual property rights such that new products on the market are protected by patent, are variations of another product or are novelty type products which appear on the market for a relatively short time and then disappear. Air fresheners are particularly prone to this last.
Having said that, a number of members here have experience in this product type and also there is much information available online from raw material manufacturers and suppliers.
Is your enquiry for commecial development or personal interest?
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Use more humectant - glycerin, propylene glycol, other glycols.
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One of the reasons that Pears soap was reformulated was to remove the rosin (colophony) which is a potent allergen when oxidised. It is inadvisable to use colophony in any cosmetic products because of the propensity to oxidise.
Don’t be too influenced by descriptions of methods described in patent specifications. These often do not reflect the processes that are actually used but just a method not the method of production.
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I’m somewhat doubtful if anyone carries out a detailed analysis for oatmeal content in cosmetics.
In pharmaceuticals, again I’m doubtful that minor variations in a relatively inert ingredient is of much import but you could analyse the product for starch content and estimate the oatmeal content by comparison.
There are established methods for starch analysis as you are no doubt aware.
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You asked this same question earlier today.
You would be best asking the supplier of the material for their test methods.
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Hmmm….. Interesting.
Are you one of the Bicosome selected partners (as mentioned several times on their web site)?
Any products for the treatment of disease, which it seems is what you want your bicosome to do, is defined as a drug or medicine.
Strictly, that is beyond the scope of this forum but, in order not to appear churlish, let me suggest hydroxyethylcellulose or hydroxypropylcellulose as a gelling agent of viscosifier. Both are nonionic and readily available.
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Can you explain a little more about that you want to achieve with this.
What we’re getting so far is a nonionic gel with nothing in it and which doesn’t do anything.
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One of the interesting aspects of cosmetics formulation is the lack of hard and fast rules in what constitutes a standard formula thus there is no fixed ratio this to that. It may be you use twice as much of one material than usual and you have a world beater product (most likely you won’t but you see the idea).
The thing to do is try it and see - you will learn a lot on the way.
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(a)Cetyl alcohol may well have had its origins in a palm tree but natural, it is not. It is produced by the chemical reduction of the fatty acids in palm oil which in turn are produced by the hyrolysis of palm oil triglycerides. Similarly with cetearyl alcohol (even worse, that may have been produced from the fats in a dead cow).
Glyceryl stearate could have had a vegetable or animal origin. Either way, it is produced by chemical processing.
Using sustainable ingredients is a laudible philosophy but that doesn’t mean you must work on formulating inferior products to satisfy the whims of a very small section of your potential marketplace by insisting on “natural”.
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Pears soap is subject to formulation changes and complaints from consumers but, when I worked at Unilever, Pears soap came off the production line without any brown colour. It was only on storing that the colour developed. With the later formulation the colour is produced by dyestuffs.
Regarding the Neutragena product, I think that the TEA stearate is formed in situ thus:
Stearic acid, Sodium Tallowate, Glycerin, Water, Sodium Cocoate, Sodium Ricinoleate,
Sodium Oleate, Cocamide MEA, Sodium Stearate, BHT, Tocopheryl Acetate,
Tetrasodium Etidronate, Trisodium HEDTA, Disodium Cocoamphodiacetate are mixed and heated just sufficient to melt and form a homogeneous mass, the requisite amount of TEA is then added and mixed well (crutched). I expect that during this procedure that the mass will clarify (provided no air has been incorporated during mixing).The colour will most likely develop on standing. I note that there is BHT declared - this is known to form a bright yellow colour in soaps.
BTW I’ve found an alternative LOI for the Neutragena product:
Neutrogena
Transparent Facial Bar Original Fragrance Free
Tea-Stearate, Triethanolamine, Sodium Tallowate, Glycerin, Purified
Water, Sodium Cocoate, Sodium Ricinoleate, Tea-Oleate, Cocamide Dea,
Fragrance, Tocopherol.Note:
1. described as Fragance Free but Fragrance is declared.
2. TEA and TEA Stearate are transposed.
3. Cocamide MEA in one, Cocamide DEA in the other. -
I don’t know if this would help
Handbook of Cosmetic Science and Technology, Third Edition, at http://aucops.wordpress.com/
It’s a whole book (887 pages) available for free download.I’ve not read it yet. I only got the link a few days ago.
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What I was trying to do was point you in the direction of learning more about things yourself.