chemicalmatt
Forum Replies Created
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IF you can live with some little benzyl alcohol or phenoxyethanol in your formula, those two will increase SalAc solubility and are miscible with PG too.
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TO reduce “sticky”, or tack, just use butylene glycol. Cheap, safe, more effective than those two diols you mentioned. Also, BG is no more or less moisturizing than the two you mentioned, meaning very little.
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Hard to say Tal without more ingredient info. Minerals? Carriers? Waxes?
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My experience, you always need a co-emulsifier with those. They will work, just not alone. Olive oil is quite the polar triglyceride, as CriticalM mentioned, BTW.
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PolySugaMulse D-9 hands down the best. Use ratio ~3:1but as everyone here said: all depends on what. Cyclomethicone? Yeesh!
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nicotero, ignore all of the above. Just decrease cetyl alcohol and the viscosity will decrease with it. See: liquid crystal formation with fatty alcohols.
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Cool, Perry. You have our collective thanks. I’ll add one of my faves here, ‘cuz why not? Liberty Natural Products [www.libertynatural.com] for essential oils at really good prices, low MOQ.
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Chris, I would not expect a haircare product with that ingredient base to be slimy at all, so your results are not surprising. There is another additive in that product that is not listed (Pectin maybe?) Perhaps your client can live with something that may be, in my opinion, better, such as what you obtained? Who needs gummy anyway? An aside: whomever formulated that mask sure liked Croda.
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I may be wrong, but isn’t the function of vitamin C (derivatives) to act as a collagen reductase inhibitor in the SC? I have not worked with it as much as Mark, so I can’t weigh in on the differences; I thought defining the mechanism of action could point you in the right research direction.
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Should make little difference in your formulation as long as you aren’t using an electrolyte-sensitive rheology agent - like Carbopol, for instance. That’s why the disodium EDTA is so common.
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This would require a seminar to answer effectively.
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Somewhat weird. Using only iron oxides?
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Try it and see. Dimethicone is not miscible with any of those ingredients but could be coupled with an ester.
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No such book exists that I know of, gabby, and I’ve been formulating multi-cultural hair-care products for a LOT of years. Look into some specialty chemical sites, such as Croda, Inolex, Evonik, even BASF(!), RITA, just to name a few. Many of these manufacturers have developed formularies for “ethnic” hair-care (archaic term) over the years. Also Michelle Breyers website [www.naturallycurly.com] has cues. Good luck.
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I would not label hyaluronic acid “an extract.” Just sayin’
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20% NaCl in a o/w emulsion? Stable? Low viscosity? Sprayable? - good luck with that.
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Metal ion hydrolysis at work. Try using a buffer.
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This is a chemistry question ZivBA. Look into Formation Constants for multivalent metal ions with various sequestrants. Then there are Chelation Values to be researched for these sequestrants. These differ for each ion at different pH ranges. The “tri” sodium EDTA is less effective than “di” for most common ions when the pH is lower than 8.0. Generally, “Tetra” works best for all formulations above pH 7.0.
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What the “high level” you are seeking to emulsify would be the relevant information here. As Perry informs, the polar nature of your oil load would dictate the chemical composition of your emulsifiers, based on the tried & true HLB system. However, as ngarayeva infers, should you have a really high level, then use a polymeric emulsifier such as Pemulen TR-2. That can accommodate up to 40% w/w as long as your formula has no electrolytes. As always mentioned here, put in the lab time and experiment.
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Widget: drop the polysorbate 20 and add more amphoteric (CAPB works OK, though not the best) and that will allow better dilution-deposition of the polyquat-10 onto hair, and you will feel better. Gunther was right: that is a lot of cationic polymer to use, depending on what MW it is.
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Strahl & Pitsch carries the best.
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I did not inquire about the legal status of CBD, guys, nor its efficacy attributes; those I know well - and yes it is still Schedule 1 status as of today. I am interested in knowing the market label logic and presumptions about dosing that it implies. Mark, you partially answered, so thanks. Your client no doubt has to decide what mass “metered dose” is. From what I gleaned, and unless another party weighs in here, these label claims are just bull$&!#. I can put 0.01% w/w into a 60g jar and advise a client to label it “200mg CBD”, even though it only contains 6. Who’s to know and who’s to care? It becomes a morality question only.
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For hydrophiles such as carboxylol cysteine, you may consider ethoxydiglycol (glycol ether DE). It is cheap too. For lipophilic components, dimethyl isosorbide works very well as a penetration enhancer. Still don’t know why it remains so expensive after all these years either.
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Mark, isn’t d-Limonene the factor in that NLP-1 concoction?
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Depends on what tactile effect you are looking for, Spadirect, and what oil/ester combo you are working with. Your’s is a VERY broad question!