zetein
Forum Replies Created
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Yes indeed! I also want to count PEGs and sugars in, but failed to find the proper word :#Seemingly, maltitol and sorbitol are the most referred to boost foam. And transparent soaps, usually rich in sucrose and the like, foam better than usual soap according to experience, but I may be wrong.
It also seems a pattern that hydrophilic -ols would disperse low soluble amphiphilies (fatty acids, nonionic esters etc.) but precipitate higher soluble surfactants (sodium laurate, sodium cocoyl glycinate etc.). The amphiphilic glycols and diols would tend to disperse despite the surfactant, but I may also be wrong.
Oh how I wish I was a real chemist… :# -
zetein
MemberFebruary 24, 2021 at 1:11 am in reply to: Does PEG-8 take effect for the Micro Dense Foam in facial CleanserYes it increases foam viscosity, thus stabilizing.Also Japanese facial cleansers are mostly using soap as the cleansing agent, and by its nature, soap gives smaller & denser foam than other surfactants. -
Salt helps stabilizing w/o emulsion or thickening cationic o/w emulsion.
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Unilever gives their Lynx shower gel sole sodium benzoate:And Johnsons:
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Is this article on the same thing?And it makes me wonder… Wouldn’t the ancient stearic/stearate self-thickened vanishing cream have the same “tech”? Would you say suppliers selling “liquid crystal” emulsifiers are scamming like what were made about “micellar cleanser”?Or are there truely something special about them?
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zetein
MemberDecember 22, 2020 at 1:55 am in reply to: Glycols for humectancy, texture enhancers, and hurdle microbe approach.@Pharma Hello.Does hygroscopicity equal its moisturising effect? Would erythritol, mannitol, glucose etc. have almost no humectancy since they have low hygroscopicity? -
zetein
MemberDecember 13, 2020 at 2:11 am in reply to: Efficacy of different MWs of hyaluronic acidsWhat makes HA fancier than its cousin xanthan gum? Wasn’t xanthan gum also used for intra-articular injection and doing good? Why no cosmetic company doing research and making interesting derivatives and selling-points out of xanthan gum?
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Why p-hydroxyacetophenone isn’t considered a “para-ben” ? lol
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“Risk assessments are not considered directly relevant for the hazard identification of the substance.
Comments regarding use, exposure, alternatives, and risks, if relevant, may be considered at later stages of the risk management process but is not relevant for the identification of the substance as a SVHC which is based on the hazard properties of the substance.” -
Usually w/si thickend by polyethylene wax, microcrystalline wax, ceresin or maybe others.
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zetein
MemberSeptember 15, 2020 at 1:02 am in reply to: Butylene glycol + hexylene glycol to preserve water based productsJust a note, Korean products may contain other preservatives aside what the label lists.
For example, it may have aloe vera extract as the first ingredient in the label, but in fact this extract consists of 1. water, 2.aloe vera extract, 3.ethanol, 4.butylene glycol, 5.phenoxyethanol, 6.chlorphenesin. All 6 ingredients under one name in the ingredient list. Though you didn’t see phenoxyethanol or chlorphenesin printed on the package, but in fact they are in the formula. -
Here is one by Estee Lauder, basically the same thing.
https://www.labseries.com/product/1530/57539/moisturize/instant-filter-moisturizer -
CAPB was used as primary surfactant in quite a lot mild cleansing products.
CDEA on the other hand, was never used as primary surfactant in any product.
Though I wonders why. 😐 -
Some stuffs sure can be left behind. Easiest examples are menthol and fragrance. No scientific study needed. That cooling or scent lasting around is the direct evidence.
But I also don’t believe a wash-off prouduct will have that penetration enhanceing effect that’s supposed to because of the high amount surfactant.
I mean if that’s true, why would ingredients that was limited to use, i.e. preservatives, universally has less regid regulation for wash-offs (usually high in surfactant) than leave-ons? Like you can use kathon cg in shampoo and face wash almost anywhere, but in leave-on it’s banned in EU, China, Japan among other regions. -
Today I learn: they can eat your surfactant !
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The pH of soap-based paste facial cleansers manufactured by Estee Lauder, L’oreal, Uniliver, Johnson & Johnson, Shiseido, are all higher than 9, most are higher than 10.
So I guess maybe there really isn’t anyway going lower than that, if a stable, foamy, cleanses-good soap is desired. -
But parabens are non-irritating, and there’s really nothing wrong using them.
Ethylhexylglycerin along with mid-chain glycols are known to tingle, so maybe they aren’t great choices, if that’s what you have experienced… -
Xylitol is quite good. It’s a sufficient humectant and easy to buy, though could be tacky at high level same as glycerin…
Evaluation of xylitol as an agent that controls the growth of skin microbes: Staphylococcus aureus, Staphylococcus epidermidis, and Cutibacterium acnes
http://www.kjom.org/journal/view.html?uid=185&pn=lastest&vmd=Full#:~:text=Xylitol%20is%20a%20natural%20sugar%20alcohol%20that%20is,the%20presence%20or%20absence%20of%201%25%20%28w%2Fv%29%20and -
It’s rathe amusing that several amino acids are known to potentially form nitrosamines, but no one sees them a “problem” equally…