EVchem
Forum Replies Created
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If your lab is small you can use https://www.quartzy.com/ for inventory for free. Also helps if you need to do any general purchasing of supplies.
As for formulas excel is okay. We have an outdated version of formulator software which when used properly is a really great tool. Overall our site has moved to a new ERP but it doesn’t have the same ease of use for R&D needs -
https://www.kosterkeunen.com/pcformulationguide/?fwp_specific_industry_topics=color-cosmetics
you can look through some of these formulas to see what kind of ratios and ingredients are being used. (this one seems promising https://www.kosterkeunen.com/soft-eyeliner-pencil/)
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Xanthan does not have great sensorial but if you are going to keep it you can always try adding it before surfactants go in. Sometimes I wonder if the gum doesn’t hydrate properly when surfactants are already in the water
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Just a general example- people thinking Vitamin E Acetate is either:
1. a preservative
2. an antioxidant that will increase shelf-life -
Can anyone explain why this isn’t incompatible? Does it have to do with molecular size? My thought is guar gum is polymeric while the surfactants are relatively smaller molecules so they cannot form precipitates
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Late to the party but I’ve used
Lexgard® Natural MHG MB (Methylheptylglycerin) with decent success at 2% and that was with Olivem 1000 which is notorious for soaping. -
you can also just use phytic acid which is the acid form of the sodium phytate, it has very low ph.
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I’m a fan of adding a little aerosil (silica) but it can potentially change texture/feel if you go too high
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I imagine it would be a water-soluble extract of the pulp, but there are tricky ingredient names so you might not really know without knowing the supplier/having paperwork. Uh google can usually help with this if you are just looking for common names (ex type in ‘Citrus Grandis’ in google and there should be posts about grapefruit.
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Depends on what country you are in
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I don’t know about literal absorption, but some preservatives are ‘used up’ by dealing with inherent burden of the microbes commonly found in something like clay
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@Graillotion If you know of any machine shops they could probably make something like this for you. Not sure about expense but if they are local you might save on the cost of shipping, you’re Hawaii-based right?
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I think this will help you
https://www.fda.gov/cosmetics/cosmetics-labeling-regulations/cosmetics-labeling-guide#clgl14specifically this section:
Off-package Ingredient Labeling
Qualifying Conditions -
I don’tknow about fully cold-process, you might be able to try heating petrolatum and a liquid oil up alone and then adding to your remaining oil phase and emulsifying at room temp.
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https://sensientpharma.com/products/flavors/smoothenol/
not sure if this will work for your application but it’s used in pharmaceuticals
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Something specifically on silicones would be nice, or other “problematic” ingredients like sulfates, parabens. Have people argue for the benefits vs consequences of using them.
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Why not pump it into the mold while hot? If you can get ahold of a diaphragm pump you can pump directly from a steel drum with heat bands (or big pot you heated up) that you could have an overhead mixer going on. That should be a relatively cheap way that still makes sure you have uniform product
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My Dow rep told me the 3500 cSt was most common
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Surprised no one mentioned menthol? If you can tolerate/ like the smell. If you can get the CBD to dissolve (MCT works fine) then you shouldn’t see much problem with emulsions
CBD suppliers who seem to have decent paperwork
https://www.klersun.com/
https://americanhempdistributor.com/for CBG Amyris just came out with a version dervied from sugarcane so les legal issues.
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I think the typically ingredient would be pigments. There are encapsulated colors that change (see Sanddream Dreamcolors white to pink, white to green, etc) If you can find a benchmark product that changes color without this then we can look through the LOI. you could try something that changes color based on pH?
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How do you cool your product? You have to post more information like the ingredients and amounts, as well as your procedure because that could all influence the spots
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Salt is worth trying with that system -it’s cheap and easy. When you say better in what way do you mean? You want your product even thicker, or you don’t like the feel the current thickener provides?
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Maybe contaminants from your ZnO? Try making the base without that and seeing if you have any color change on the same timescale. Does the COA for the Zinc mention any heavy metals/ purity assays?
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You’ll have to include the full formula (ingredients and amounts) to get more help here
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5% Tocopheryl Acetate is going to be tough, keep in mind to solubilize you’ll need about 4x-10x the amount of emulsifier compared to oil, so you can try again but that much tween is going to feel sticky. I’d certainly prefer Cremophor, just premix with the oil before adding.
Can I ask why so much of the acetate though? It’s not the antioxidant people claim it to be and there are nicer feeling emollient options