Richard
Forum Replies Created
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Richard
MemberOctober 17, 2024 at 3:10 am in reply to: Liquid gums / liquid substances to gelify waterhave a look at sclerotium, algin, hydroxypropyl guar
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Depends if you want same INCI or performance. If you want same INCI then can do them individually or if want very similar Evident has Emulgiza lite which has one ingredient different.
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Richard
MemberAugust 5, 2024 at 12:20 am in reply to: Precipitant after adding preservative in cleanser with aqua sf-2Try removing the cationics. I expect not compatible with SF2
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The other one that could be causing it is Sodium Phytate which can precipitate out again once the pH drops to around 5 or lower.
Oops, I’m thinking of sodium anisate so ignore my comment.
- This reply was modified 3 months, 2 weeks ago by Richard.
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I have not played with it in this type of formulation but I think I would still try it using a modified method of heating the silicone up to around 60C and then stop heating and add the Trihydroxystearin and mix while it dissolves and cools.
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Richard
MemberJuly 13, 2024 at 12:51 am in reply to: How much AOS-40 can I use to avoid H318 eye damage hazardI’ve come across the same issue before and had to move away from certain materials for this same reason. And yes 3% is where the Eye Corrosive classification passes on the product. Best you find some eye irritants only.
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It’s a bit hard to offer much advice as you don’t specify the type of product you are making. Is it all oils, is it an emulsion.
The way I would handle it would be as below.
1 Leave it out of the oil phase while the oil phase is heated. Melt everything that needs to melt up to (presumably 70C) so don’t go too high, just as high as you need to keep the temperature as low as possible. Once everything is melted add the Trihydroxystearin and let it melt into the oil phase while mixing. Not homogenising, just mixing. Then proceed as normal for an emulsion.
2 Add Mica into oil phase.
3 Depends on what you are adding and whether it is O/W or W/O.
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Richard
MemberMay 21, 2024 at 4:06 pm in reply to: Face Serum without emulsifiers - Need help to minimize pillingYou could try 0.2-0.5% SF-75H (hydrogenated lecithin) from the same manufacturer as the Xanthan gums.
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For this type of product I think you need to consider a high melting point wax (Rice, Sunflower, Carnauba etc) also and not rely on just the one wax. I think you will get a better and more stable product.
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The two preservatives you mention should product against yeast/mould. But i certainly would not consider them effective for broad spectrum. Since the sodium acrylates copolymer is the “emulsifier” it has to be neutralised to around 6 or more. At this pH these will not offer much efficacy. I suggest you check the pH of the product. Also I am not sure what is being used to adjust the pH, but first check the pH and they may tell you something.
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Remove the urea and reduce surfactant level. Urea is going to keep the pH up anyway.
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Have a look at Rheobyk-7590 which I found quite easy to use and gave a nice, soft oil gel.
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Can you split Batch 21 into 3 equal part batches and then add each ingredient accordingly to the required amount so that you end up with 3 batches?
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I’ve always considered it as refatting agent rather than viscosity increasing agent with the refatting coming from the glyceryl oleate part. So if you have access to glyceryl oleate itself you may choose to use that although you may need a bit of heat.
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I would not expect you to experience any issues with this system around the Floratech product. A Siligel based system is always going to be cloudy anyway.
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I made up a gel last week containing Trisolve P which is the vegan form of the Trisolve. I had no issues with the product going together. The gel was based on starch and tara gum and went together without any problems although I did wonder how the Trisolve P would go into the gel, especially since it was a reasonably old sample of the Trisolve P which was quite thick and gluggy. I also added a number of water based actives and in the end it was still ok. I have no idea at this stage of stability but will monitor it over time for any adverse affects. Time will tell, but I do think the Trisolve does seem to be a fairly robust ingredient despite it’s relatively short shelf life although I am not in a position to comment on efficacy.
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I have always found the Innospec surfactants more tricky to work with than the information would indicate and have never really found that salt works particularly well to thicken them. In theory it does appear to be possible. When working with the Iselux and Taurates I have always found that slowly reducing the pH at the end has turned out to be the best way to thicken the end product.
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Richard
MemberJuly 30, 2024 at 1:18 am in reply to: Face Serum without emulsifiers - Need help to minimize pillingYou can try Berg & Schmidt. I didn’t get notified of any supply issues but they had a big MOQ if I recall correctly.
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No I had no luck with small quantities. I did get some prices from some of the manufacturers but pack size ranged from 5-50kg which was far too much at the price they were asking. So Sunflower Hydrogenated Lecithin is now consigned to the never likely to be used ingredients.
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I am not from America but New Zealand and do not big quantity, I already saw this on Making Cosmetics but it does not appear to be a straight swap and only handles a smaller amount of alcohol. I have checked everywhere i can think of.
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Richard
MemberMay 24, 2024 at 2:09 am in reply to: Face Serum without emulsifiers - Need help to minimize pillingNormal stability should be enough to determine stability with samples at ambient and elevated. With lecithins you should probably aim your your pH for the top end of the spec because it will probably drop by 0.5-0.8 units. And where possible, do stability in the final packaging material also.
FYI, I just disposed of some hydrogenated lecithin emulsions today that were 4 years old and still in good condition so lecithin derivatives are fine to use.
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Richard
MemberMay 22, 2024 at 10:08 pm in reply to: Face Serum without emulsifiers - Need help to minimize pillingIt is possible to get stable products with hydrogenated lecithin but always you will need to do some preliminary stability work.
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Try contacting AS Harrison in Auckland as they are the agents for Inolex who have a number of similar conditioning agents.
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100% agree with this comment. You don’t want to find a way to only just pass the test under controlled conditions. You want an effective preservative system that stops any growth from occurring.
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Richard
MemberMay 22, 2023 at 9:44 pm in reply to: Need formulating services? Here are some contactsHi Benyamin, while I don’t have any specific hair straightening products that I have done, if oyu can email me and provide some more information perhaps I can assist you.