evchem2
Forum Replies Created
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Happy Birthday Perry! Really appreciate the forum you’ve put together
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Pullulan is an excellent film former at higher use levels, but it’s pretty expensive especially compared to PVA
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Second the zeolite suggestion by chemical matt.
Tangentially, you could also use methyl nicotinate. It is a rubefacient first so expect some reddening of the skin along with slight tingling. Also less is definitely more in this case, it doesn’t take much to produce decent effect.
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I don’t put full stock in the HLB system, but your only emulsifers have a somewhat low HLB, you could try adding in something higher to balance out. Also 5% of both of those is likely overkill, try cutting them in half. Also, how long after finishing the mix do you wait before you put the sample in the oven?
Likely unrelated to your issue, but is your vitamin E the acetate form or tocopherol?
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@Paprik do you have any literature/ source on XG swelling better in acidic media? Haven’t heard that before, I would have expected since it is anionic that acidity would not help hydration
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Seconding the 1% Orange EO- I’d go even further and say knock it out completely first and see if you still feel tingling.
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Ah yes if you have CBD isolate in there you will see a pinkish color after light exposure- not sure exactly what it’s degrading to but I saw the same thing when formulating a CBD line. You may not have your CBD as uniformly dispersed as you hope, especially since your oils don’t seem like the best to dissolve the CBD- try MCT oil.
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You can order it off spectrum chemicals but they likely won’t ship to residential addresses. Other questions that come to mind- why do you want to use ZPT, and are you making this for personal use or do you intend to sell/distribute (in what country)?
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Without knowing what’s in the formula it’s hard to help, but CedarS makes a good point-have you performed PET on your product?
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Not exactly the same but Croda’s guidance on inorganic sunscreens may help you here.
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So you’re using both zinc oxide and titanium? What’s your final product pH, how fast do you see the issue occurring?
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I think the images are inverted in that diagram @Paprik (homogeniser and rotor stator are swapped) but i like that description otherwise
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It’s probably taking up some moisture- how do you package/store?
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Did you use heat at all? why are you adjusting the PH- is this for the final formulation?
Depends on how large your large batch is, but a jacketed kettle with sweeps and vacuum would likely help.
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You can try Carrubba for botanical extracts that also provide scent, the label would just read the name of the plant extracts they use to make the scent.
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Adding onto ketchito, it will depend on the other ingredients in the formula- if you already have some hydrotropes/ other solubilizers your clarity could be impacted by those.
To limit test batches, don’t test this incrementally. You say you want as much SCI as possible, so try the upper end of what you are hoping for next (ex try 20%). If that fails, cut in half and try again, Still a bit tedious but better than just slowly edging up.
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SLES supplied at 70% concentration or 70% in the final formula? Heat will be your friend more than homogenization, and if you do homogenize you will need vaccuum or centrifuge to remove air.