ketchito
Forum Replies Created
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@Abdullah The benefit would be given by using more CAPB, but as I mentioned, it depends on your system, and if your formula is that of a structured cleanser, then you should be very careful with the amount of CAPB.
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@vandrean Not only the amount of Benzalkonium chloride (BC) is a bit low (you can try at least doubling it, assuming you’re using an 80% BC), the manufacturers state that BC shouldn’t be use with anionic surfactants, not only because of imcompatibility issues, but because of that, BC will be “kidnaped” by the anionic, without being able to perform.
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@qwerty If by water-soluble you mean ethoxylated silicones (which allow formulation of transparent surfactant-based formulas), they are actually not water soluble, but easier to disperse in water systems. Generally speaking, ethoxytaled silicones sacrifice transparency for performance (the more dispersible the silicone is, the less final conditioning on hair). But that’s generally speaking, you really need to get in detail through each molecule to understand the final performance it gives.
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@amitvedakar Due to its ability to interact with the polar groups of surfactants (same as Cocamide DEA does), it might actually stabilize foam by increasing rigidity of micelles. I just would’t use much more beyond that 2% since rigid lamellas (depending on your formula) could eventually settle down if not properly suspended.
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@Abdullah That’s a very interesting situation, and it all depends on what else is in your formulation. H&S and Pantene are what it’s called structured shampoos, meaning they are not just a mixture of SLES, CAPB, CDEA and NaCl, they also have cationic polymers, (anionic) polymeric rheology modifiers and silicones, which make the system very sensitive. High amounts of CAPB in those systems can push the formula to the limit, making the gel network prone to phase separation. So, again, it all depends on your formula.
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@nishil113 That’s good news. If you want to add more slip, you can ad a silicone as suggested before. Usually ethoxylated silicones impact less on your stability.
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@nelson Dipropylene glycol and Propylene glycol are mainly used as solvents (for diluting purposes), and they would impair the viscosity of your fabric softener (especially Dipropylene glycol), so I wouldn’t use them.
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@Agate The problem is that mechanisms are different: it´s like trying to remove water from a leak using a mop (Triethyl citrate) instead of fixing/blocking the leak (aluminium chlorhydrate and the like). Ok, maybe the example is not so accurate since Triethyl citrate doesn’t adsorb but destabilize some chemical bonds (supposedly), but the point is that nothing workd better than attacking the source. Also, doses of Triethyl citrate are usually high, and I’ve seen it cause some sensitivity issues. That doesn’t mean you shouldn’t try it, but know your expectations.
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I tried Zinc ricinoleate in the past for an aluminium free deodorant, but unfortunately I didn’t see any benefit, even t high doses.
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@natzam44 There are two things related to odor:
1) you can reduce it (by using fragrances or triethyl citrate which decompose some fragrance molecules), and
2) you can prevent it (by reducing the environment where odor causing bacteria grow (like blocking sebaceous glands with Aluminium compounds, remove water/oil with powders like starches, and and by killing or prevent the growth of bacteria).
As you see, odor is a complex issue, and a good antiperspirant has to cover them all.
Fragrances are not included in large amounts since that particular area is very sensitive to allergens…I’ve seen formulas with around 0.2-0.4%
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@Zara I believe that small polymers that don’t pack well perform better at giving volume to hair. For instance, silicones bend and twist so well, they spread better and form a more even film than cationic guar of same molecular weight, so cationic guar might give a better performance on conferring volume to hair. This is of course roughly speaking.
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@nelson In here, you need to then push your fragrance manufacturers to give you more substantive fragrances. You could alternatively add a cationic polymer to add in deposition, but that system is very ensitive.
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Hi @jessah. It’d be better to know specifically what type of issue you have that impairs your shelf life. There are few things that can provoke that like flocculation, pH drift, phase separation, color change, viscosity loss, odor change, etc. So, to better tackle your issue, perhaps you can describe your problem better.
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@bayo1214 You could try contacting TRI (Textile Research Institute) in New Jersey.
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@jessah What’s the issue you’re experiencing with your formula? Maybe the problem is not the antioxidant.
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@nelson Fixatives used in fragrances are usually hydrophobic polymers. In the case of caps, the ones for fabric softeners are meant to interact well with the cationic and deposit fairly well, releasing the oil once they are brittle (when the fabric dries) and there is some friction.
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@creatorhealer2020 It depends on the type of emulsion you’re trying to make: if it’s an W/O emulsion, you’d need to increase the amount of Glyceryl stearate (emulsifier) and waxes, so you increase stabilty by increasing viscosity, If on the other hand, you want to create an O/W emulsion, then as @Belassi mentioned, you’d need to add a high HLB emulsifier like Polysorbate-20.
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@bsingle You can make gels resistant to oxidants both using surfactants only, or using polymers (like Sepimax Zen, Carbopol 980 and Aristoflex TAC).
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@UsmanAli It might be the case that not all of your fatty acids are completely neutralized. By the way, what’s your final pH?
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@Fekher If you check the table on that study, it mentions that in their research, contact time to inactivate (reduce of infectious virus from ≥3.0 to ≥4.7 log10) SARS-CoV-2 for PMC = para-chloro-meta-xylenol (or Chloroxylenol) is 5 min.
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@BigDreams Just a quick question, did you do those batches and when you saw they had low viscosity, decided to add Xanthan gum to fix them? If that’s the case, then chances are Xanthan gum didn’t have enough room and energy to properly mix and hydrate, and that’s why you’re seeing snots on top (making a premix in some glycol would made it better, but still it’d have been hard to properly incorporate the gum at this stage). To save those batches, maybe you could try adding a bit of glycols (like Glycerin), but you need to check how much viscosity gets affected.
If on the contrary, you properly mix the Xanthan gum in the water prior to the addition of the rest of ingredients, then I’d add glucosides to the equation.
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@Fekher Reckitt is actually citing a study made this year about Chloroxylenol’s specific activity against SARS CoV-2 (https://www.ajicjournal.org/article/S0196-6553(20)30313-8/fulltext). If I’m not wrong, the contact time they sow is 5 min. Nevertheless, keep in mind that the study was published as a letter to the editor, and it didn’t make EPA update the list of disinfectants approved for COVID-19 (https://www.epa.gov/pesticide-registration/list-n-advanced-search-page-disinfectants-coronavirus-covid-19) nor there was a follow up study, so consider this information with care.
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@Zara Amido amines can’t unfortunately replace silicones, since they are small molecules that deposit preferable between hair cuticles or at hydrophilic sites, unlike silicones which can cover large areas. Nevertheless, they can actually improve softness, especially if combined with heavy quaternized surfactants like Behentrimonium chloride. But used alone, I don’t think they would be enough to keep your emulsion together.
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@Ahmad Usually a bit of Soda after incorporation of HEC helps improve clarity…nevertheless, that amount of Salt could actually be messing with your system, not necessarily because of the HEC, but because of the interaction with surfactants. Also, increasing pH also improves clarity, especially when using betaines.
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@Juliatrudie The best strategy is to use a mixture of solvents, rather than just one alone, not only to avoid physical issues but to reduce any allergic reaction.