ozgirl
Forum Replies Created
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You would not use ammonia and acetic acid in the same formula.
I think your surfactants might possibly be too foamy. Surfactant levels are usually very low in a window cleaner and are usually low foaming.
Do you mean Ethylene glycol monobutyl ether?
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Looks ok but it has a long way to go to be a serious competitor to UL Prospector.
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I would definitely recommend the stainless steel table because it will make cleaning and sanitising much easier.
My preference for a layout is to place the scales where there is room next to them to line up all the raw materials I will be using in the formula in order.
Store similar materials together for ease of locating items and have them clearly labelled.
Hope this helps
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Castor wax is hydrogenated castor oil.
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Would a roll-on or pump spray deodorant formula be more suited to the ingredients you have available?
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I did some work with DOE a few years ago when I was formulating floor polishes. As Perry mentioned it works better when you have an easy to quantify goal. In my case it was a gloss reading for the floor polish.
For cosmetics I don’t use the DOE methods formally but can see how a background in this helps with working out what to change in a formula when you are trying to optimise your formula.
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I would recommend trying to replace it with the Incroquat CR as this has a similar INCI.
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Sodium cocoyl isethionate is generally recommended for syndet bars and opaque formulations (although when used in low amounts can be used in clear formulations).
You would probably get better results with Sodium Lauroyl Methyl Isethionate instead or try combining the SCI with another anionic surfactant.
Does your SCI contain stearic acid? This could be the reason for the sediment.
Also Cocamide DEA is now classified as a possible human carcinogen (https://monographs.iarc.fr/ENG/Monographs/vol101/mono101-005.pdf) so I would remove it or replace Cocamide MEA.
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I would recommend using your Argan and Rosehip Oils to create an oil based facial serum (something like this http://swiftcraftymonkey.blogspot.com.au/2009/11/facial-serum-for-dry-skin.html).
I would then recommend starting to learn about emulsification by starting with creating a basic lotion (http://swiftcraftymonkey.blogspot.com.au/2012/01/newbie-tuesday-its-time-to-make-lotion.html).
Once you have the basics mastered you can move on to more complex products.
It can be beneficial to look at ingredient lists in commercial products to learn about the different functions of ingredients but you also need to remember that these products were created by experienced formulators with equipment and ingredients that you may not have access to. These products cannot often be recreated by beginners.
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Thanks @Perry and @Doreen . I will give neutralising at the end a try as well.
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Seems to be a marketing gimmick to me. I think that they probably just have 30 or so different formulas and they pick the best one based on their skin assessment. It would probably give you a better result than just using one product based on one parameter (such as dry or oily) but I think it is more about the person feeling special because they have a customised formula.
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Thanks everyone for your thoughts.
The formula I have given is the one from the Lubrizol website and I haven’t tried it yet. I was just wondering about the order of addition for the neutralisation.
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@Chemist77 I almost forgot about aeration. Thanks for the reminder. I am guessing that is why they don’t neutralise at the end.
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Have you tried any of the amphoacetate type surfactants?(e.g. Sodium Cocoamphoacetate, disodium cocoamphidiacetate, Sodium Lauroamphoacetate)
What is the issue with the cocamidopropyl betaine? I am assuming an impurity has made it on the the Prop 65 list. Can you get a grade with the impurity removed?
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Eeeewwww!
Report to the ACCC (Product safety) as an unsafe product. You can even make the report anonymously.
https://www.productsafety.gov.au/contact-us/for-consumers/report-an-unsafe-product
The ACCC and /or TGA would also be interested in the medical claims being made.
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Dishwashing concentrates contain water. They just contain less than non-concentrate products.
Try increasing the concentration of your actives (and reducing the water) and see how concentrated you can go before the viscosity is not acceptable or the product is unstable.
As Chemist77 mentioned Sodium Xylene Sulfonate can be added to help reduce viscosity in concentrated formulas. Also you could try some ethanol to help reduce the viscosity a little.
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Also consider trying a different fragrance. In many cases if your fragrance is made up of very volatile components (e.g. some citrus fragrances) then it won’t have much staying power no matter how much you use or any additives you use.
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I have used Cetiol OE (Dicaprylyl Ether) in a roll on deodorant with good results. It may be easier to get this product than the Cetiol S.
Did you contact your BASF representative to see if that can make any suggestions?
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200 - 400 units are very low volumes for Alibaba.com. That is why I asked about Aliexpress which generally sells in much lower volumes.
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Have you looked on AliExpress?
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The addition of salt for stabilisation seems to be limited to silicon and water emulsions.
This article might be of interest
https://pubs.acs.org/doi/abs/10.1021/ie401490c -
@Chemist_Ahmed It is time to do a little research of your own. When you have come up with a formula we can make suggestions but nobody is going to give you a formula with percentages.
Please refer to the following thread for advice on requesting help in this forum.
https://chemistscorner.com/cosmeticsciencetalk/discussion/1070/rules-for-requesting-formulating-advice-help#latest -
Benzyl alcohol and Dehydroacetic acid is designed to be used at pH values less than 6 and then still may be a little weak in protecting against mould.
I am guessing with all of that sodium bicarbonate your pH is above that level so your discolouration is most likely mould and/or bacteria.
Dehydroacetic acid is also known to discolour under some conditions.
Magnesium supplement can mean any number of magnesium salts (e.g. magnesium oxide, magnesium citrate, magnesium chloride, magnesium gluconate) some of which could also contribute to raising the pH of your product to levels that are not suitable for your preservative.
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It would be very unusual to add sodium chloride to a lotion at all.
Sodium Chloride is used to thicken some surfactant systems (e.g. shampoos, body washes). It can also be used as an exfoliant in anhydrous scrubs.
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You would need to check your local regulations. It is ok in Europe but I am not sure about the USA or other locations.
http://ec.europa.eu/growth/tools-databases/cosing/pdf/COSING_Annex%20IV_v2.pdf