ngarayeva001
Forum Replies Created
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I really like watersoluble (mixed with emulsifiers) amodimethicone and quaternium-80. Polyquaternium-10 comes in different varieties and can be very conditioning.
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@lewhitak, there’s one thing that makes it even worse, repackagers rarely know how to store ingredients properly. DIY ingredients are compromised from day one. Parabens and formaldehyde releasers are the only reasonable option for use at home. Saying it as someone who grew colorful mould on a product preserved by PE9010.
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It doesn’t even have an emulsifier and a proper preservative. Zinc oxide doesn’t give sufficient UVB coverage. Register for BASF simulator and try to achieve SPF 30 with zinc oxide alone. Chemists with years of experience struggle with sunscreens.
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How much is a matter of experimentation. Apparently GMS is used as a pearliser but I have not tried it yet.
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It’s these one for zinc https://www.carecreations.basf.com/product-formulations/product-highlights/product-highlights-detail/Z-COTE/30083071
get basf simulator and you will see how difficult it is to get any decent coverage without adding 20% of powders. Although that simulator isn’t perfect science either.
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Terrible idea. Sunscreens are the most complicated personal care products to make. You need a lot of knowledge, experience, equipment and money to make one that works. Testing alone would take 10k. Your formula won’t work for multiple reasons: you don’t have uvb coverage, zinc oxide is utterly difficult to disperce, it’s oil in water so it will cause ph elevation, you don’t have film formers and dispersing agents. Also depending on the country it might be classified as drug which means 10k might not be enough to get approval to sell it.
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H in pH corresponds to hydrogen. No water no pH. Citric acid has no ph until diluted with water. Speaking of balms, they are oil based.
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Pearlisers such as glycol distearate
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Btw I like sodium PCA too and I think it’s similar to lactate, but PCA is several times more expensive so lactate wins.
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I use 60% liquid, but want to try powdered version too. I really like it but I also like carbomers and polymeric emulsifiers. Unfortunately these are not compatible with sodium lactate. If there’s one humectant that feels different (again as per my anecdotal experience) its sodium lactate. Re smell, it’s not that repulsive to me, so I kind of ignore it. Maybe I just got used to it, as it’s in the moisturizer I use everyday..
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There are several great watersoluble silicones, some of which are even cationic. It’s 2 in 1 solution. Also they don’t suppress foaming as much as regular silicones.
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Also, that would be very liquid. You need a thickener.
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Tetrasodium EDTA prefers ph > 7. You might want to swap it do disodium.
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Do you know that water is a chemical? Also how did you measure that your health has ‘dramatically improved’ except for ‘I feel like it’ and other anecdotal evidence?
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You don’t need ‘oil’, you need watersoluble silicones such as amodimethicone (there are blends with emulsifiers) or quaternium 80, or something like peg8 dimethicone.
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I couldn’t find many tables comparing hygroscopic properties of humectants, and unfortunately without it all our discussions is nothing but anecdotal evidence. I feel most of humectants are very similar. Sodium lactate is the least tacky, butylene and propylene glycol are the most versatile and compatible with other materials, (again just my own anecdotal perception), glycerin is cheap and effective for dry skin (not aesthetically pleasing but I tend to use it a lot) and urea is quite interesting, although I am still in the process of taming it. Betaine isn’t special in my opinion. Agree with Pharma, that mixing is the best approach. I always use several because they all perform optimally at different humidity.
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@Perry, thank you, it’s very useful! Shall I assume the same about polymers in powdered form (carbomers, pvp etc)
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3% of NaCl? That looks very high. Also iselux isn’t very responsive to salt.
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I bought sorbitol recently but can’t decide whether I like it or not. Btw betaine helps with dissolving SA a little. I know I sound like dissolving SA is my biggest problem ????
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I think we should give Lush a credit: not only they emulsify most of their emulsions with TEA stearate but use parabens and still create a vibe of a ‘natural’ brand. They make 1995 products and successfully sell them in 2020.
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@katerinak it’s sold in Sephora. They always put Fresh’s mini products in the queue isle. I tried to make TEA stearate cold cream (like ponds) but couldn’t get the texture right. I am more accustomed to work with modern materials. I would be very interested to make that ‘ancient’ cream, but have no idea how to process it and how much water is a max. @Pharma we would really appreciate your guidance. I remember you mentioned it’s not an emulsion but water is trapped inside of bubbles of beeswax and oil (like a honeycomb I guess) in the thread discussing cold creams. I tried to research it back then but couldn’t find anything comprehensive.
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My general approach is that is someone had predisperced that I would rather get a liquid form. Had negative experience with trying to dissolve things myself (tried to dissolve trimethylsiloxysilicate in isododecane to save money: never again). Also as you noticed powders are floating around in the air and I hate wearing masks.
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I noticed a similar product by Fresh https://www.fresh.com/uk/crème-ancienne-H00001097.html also oil and beeswax. It puzzles me even more as they don’t have preservative. Also a known brand. I would assume LOI is correct. I think they all are trying to copy some ancient cream (rosewater, beeswax, oil).
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Also how to pass it through stability? That would stay put together if heated to 40C and hold for 3 months. Lush is a large business. They must be doing all relevant stability tests.
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Oh, you mean powder! I have never bought it for some reason. I use a liquid which is usually 60%. Isopentyldiol is a glycol, I just fell after supplier’s info again. If someone thinks it’s a good material and I am wrong please let me know. It’s more expensive than propylene glycol but I couldn’t see any difference. SA is salicylic acid.