ozgirl
Forum Replies Created
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There are lots of laundry formulations (and other household formulations) on UL Prospector.
You can also get formulations from supplier websites (e.g. Stepan).
Zinador 22 from Croda is suggested as a possible additive for odor removal in laundry detergents.
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Not sure if it is the cause of your problem but why are you using 11% glycerin? That is way too much. It is not necessary. Try it without the glycerin.
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Would a heavy duty rotary tumbler (similar to a rock tumbler) be suitable for your needs?
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I haven’t tried it in this application but maybe something like ColaQuat SME from Colonial Chemical might be of use.
https://colonialchem.com/products/colaquat-sme/
It is cationic so may not work with anionics but worth a look.
colonialchem.com
Cola®Quat SME - Colonial Chemical Inc. | US-Made Chemicals
Cola®Quat SME - Colonial Chemical Inc. | US-Made Chemicals
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You should talk to your fragrance manufacturer. At the very least they will be able to guide you on the types of fragrances that are suitable for these products. There is a reason that the fragrances in these types of products are limited because only certain fragrances have the qualities you are looking for.
I haven’t made anything like this but I assume you would also probably need some sort of slow evaporating solvent. Maybe look to formulas for reed diffusers. They might give you some suggestions on solvents.
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It could also be your SCI. It is usually recommended for opaque formulations.
SLMI (Sodium Lauroyl Methyl Isethionate) is recommended for clear formulations.
Agree about needing a preservative.
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It depends on if you are making it 50% w/w or w/v?
If it is w/w (weight per weight) then you need 50 g of citric acid and 50 g water (total 100g)
If it is w/v (weight per volume) then you need 50 g of citric acid and make it up to 100 mL (in a volumetric flask).
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Biguanides are cationic and are not compatible with anionic systems.
Why do you have so much fragrance (1% should be more than enough) and why are you trying to add extra fragrance components? Just choose a fragrance you like and add it as supplied or work with your fragrance supplier to come up with something that better meets your needs.
Why did you reduce your surfactants so much in the revised version?
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Wow ????. They only tested two microorganisms at pH 7. They didn’t even test what would be considered broad spectrum activity.
I have had products become contaminated with microorganisms using caprylhydroxamic acid based preservatives even after they passed stability and PET tests. We quickly moved away from these preservatives.
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I always assume that marketing information is overly exaggerated. The skill of the formulator is often deciding if that marketing BS will work with your brand/marketing story within the limit of cosmetic claims.
For example - A natural brand will prefer a plant extract over a functional silicone even if the product doesn’t perform as well. Whereas a high end brand will add the functional (but not natural) ingredient.
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It might be hard to find but some SLS might still be petroleum derived rather than coconut derived.
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Try increasing your CAPB and decreasing your SCI. You need more liquid.
Do you melt your BTMS, cetyl alcohol and coconut oil?
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If you can’t find a European distributor you can order small quantities from Trulux Australia (They ship internationally).
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Be aware that fertilizer/farm grade urea will often be contaminated with rocks and dirt. It will not have the same purity as that used for cosmetics.
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Great test! Thanks for sharing!
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Not sure what type of labeling your bottles have but can you put a small label with the updated ingredients on over the top of the existing label?
You would need to check if overlabeling is acceptable in your country.
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This looks like a list of every possible ingredient they could find ????.
I don’t think there is any right with this list.
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Try reducing your Allantoin to less than 0.5%. This is an ingredient that is known for crystallization at high concentrations. You could try searching the forum for more information.
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How is this product any better than just washing with dishwashing liquid? Do you have any way to test that it can remove milk residues?
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You could try Colonial Chemical Inc or Stepan.
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Stepan have a few free starting formulations for Car Wash products on their website.
https://www.stepan.com/content/stepan-dot-com/en/products-markets/formulation-finders.html
It might give you an idea of what concentration levels you need to use.
stepan.com
Search for starter formulas and antimicrobial formulas using Stepan's Formulation Finder.
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I have seen bath salts made in something similar using a drum with baffles. It is my understanding that the baffles help with mixing.
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It was a number of years ago but I think the pH was between 6.5 and 7.0. It was the Phenostat preservative in a surfactant blend (possibly a body wash) in PET bottle with a pump.
Hopefully the Piroctone Olamine in your system will eliminate whatever the shortfall was in the CHA system when we tried it.
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Your preservative selection will depend on what is available to you and the pH level of your product. Many car wash products tend to be mildly alkaline (pH 8 -11) so require preservatives that work in this pH range.
Depending on your country there may also be other restrictions (e.g. USA needs to be EPA registered) especially if you are planning to sell the product. If it is for your personal use only then try and find a preservative that works for the specifications of your formula.