Gunther

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Gunther
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  • Preservatives should prevent the growth of most bacteria there so there's no need for heating.
  • jamsinekhatri said: I have made liquid Dishwash. But the problem is that there is a separation after 12 hrs. I don't know if it is due to mixing or something else. Please guide. Here is my Formulation Water: 800 ml Labsa: 80 ml FD: 1.5% ETDA: …
  • Some people swear by Ketoconazole shampoo.
  • Royalbre said: @Gunther Thank you, My customers want natural products. The performance, cleansing power, foam, and irritation of everything natural plainly sucks. Synthetics do far better. To start with, the only true natural surfact…
  • Maybe they are all buying generic, look-alike bottles and caps, instead of having them custom designed and made? They can copyright their label designs too.
  • Pharma said: @Gunther Isn't it astonishing how people gulp down information and behave as if they got useful tips but completely ignore important questions asked in return to get information indispensable for real help/advice? Agree It…
  • ngarayeva001 said: @Gunther, I don't see any difference on my hair. I even have a feeling that it tangles my hair even more.  Have you compared Cetrimonium chloride to Behentrimonium (either methosulfate or chloride) head to head, i.e. …
  • Something like 7% active SLES (Sodium laureth sulfate) 2% active SLS (Sodium lauryl sulfate) 3% active CAPB (Cocamidopropylbetaine) water q.s. to 100% salt q.s. as needed to thicken it and it can work as shampoo shower gel mild, non-irritating dish…
  • Can you buy Cetrimonium chloride (CETAC) there? If you do, then you can try something like 2.5% active CETAC (8.33% if supplied as 30% active) 3.5% fatty alcohol (cetyl, stearyl or cetostearyl) 1% Silicone Polyquaterniums and other conditioning age…
  • ngarayeva001 said: I guess it's a matter of personal preferences. I don't like cetrimonium chloride at all.  However comparing Behentrimonium Chloride and BTMS, I think the chloride is more conditioning. May I ask why you don't like Cetr…
  • ketchito said: Among the common anionic surfactants, LABS is the most hydrophobic (due to the aromatic ring). Addition of electrolytes (like NaCl) makes it even more hydrophobic and prone to precipitation, since Na+ ions neutralize the negative…
  • Oladoo said: Hello, Plese, between Polyquarternium-37 and BTMS-50 which is more conditioning? I've used BTMS-50 at 1.5% concentration, but it shrank my hair so much that when the hair dried it became hard to comb So it really shrank you…
  • It depends on what specific ingredient do you want to prevent from oxidizing. Sometimes it ain't real oxidation, just chemical degradation trough other pathways.
  • Silicones are much harder to emulsify than oils The HLB system doesn't work well with silicones. You may wish to stick to existing formulations proven to be able to emulsify silicones. You may wish to consider cationic emulsions, like BTMS or Cetri…
  • Sibech said: @Royalbre That is very very cheap, so cheap in fact that I would either: A) Find another one or Get the contract read through by another chemist to check for what is NOT included in that price and a lawyer to make sure it is enfor…
  • ketchito said: Among the common anionic surfactants, LABS is the most hydrophobic (due to the aromatic ring). Addition of electrolytes (like NaCl) makes it even more hydrophobic and prone to precipitation, since Na+ ions neutralize the negative…
  • Cetrimonium doesn't seem to be too different from Behentrimonium both work good enough https://chemistscorner.com/cosmeticsciencetalk/discussion/5938/anyone-else-believes-cetac-fatty-alcohol-is-more-detangling-and-conditioning-than-btms/p1 So for a…
    in hair mask Comment by Gunther September 3
  • This one seems to favor CETAC over Behentrimonium Cetrimonium chloride gives a light texture, and behetrimonium makes the hair too heavy. (Page 171) ... but after reading this they seem to contradict themselves: In the first paragraph they stat…
  • bella82 said: Gunther, I am going to try out the leave on. But please, am pretty new to formulating and I don’t know what qs would stand for.  https://en.wikipedia.org/wiki/Quantum_satis Meaning "as needed, but not more than that" Even s…
  • Sodium lauryl sulfate shouldn't be used in any leave-on applications. It is already too irritant in rinse off applications so imagine how harsh it would be at 20% in leave-ons. So get rid of it and get a proper emulsifier to hold the oils and myris…
  • andriannav said: Perry said: What else is in the formula? AQUA Behetrimonium Chloride Cetrimonium Chloride Sodium Phytate Betaine Panthenol BABASU OIL …
    in hair mask Comment by Gunther September 3
  • Carbonate/bicarbonate don't evaporate like water and alcohol do, so they will leave a white residue if the cleaner ain't fully rinsed off. If it's for an application that can't or won't be fully rinsed off you can: A. Remove them, and rise the pH w…
  • The simplest thing can be a quick wash or rinse with demineralized water. Bacteria doesn't feed on plastic (not for nothing bottles take decades to biodegrade). The high injection blow molding process @chemicalmatt mentioned, degrades any bacteria …
  • 1.2% BTMS is too little emulsifier for a whoping coconut 30% oil 10% Cetearyl alcohol is too much and needs extra emulsifier by itself. What kind of guar? Anyhow, it's likely it will leave a sticky afterfeel. So does glycerin. If it's a for a spra…
  • UsmanAli said: @Gunther sir SLES 70% and i have used as supplied  ok am going to remove CDEA maybe when i have not use carbopol the temperature effect the thickness at 40 degree Celsius  ok  am also going to remove glycerine  If that'…
  • Aziz said: Gunther said: SLS is added to improve SLES foam profile https://www.happi.com/contents/view_features/2009-09-02/the-formulation-basics-for-personal-cleansers/ You can try a SLES only shampoo. If irritation persists, then yo…
  • Make sure it's 8% active SLES, and not 8% as-supplied as SLES often comes in 70 and 30% active, never 100% Use CAPB insted of coco betaine Make sure active CAPB is a third (or more) of active SLES. Make sure that CDEA is not leaving a sticky afte…
  • SLS is added to improve SLES foam profile https://www.happi.com/contents/view_features/2009-09-02/the-formulation-basics-for-personal-cleansers/ You can try a SLES only shampoo. If irritation persists, then you can try a sulfate free shampoo. If ir…
  • Anyone knows how much vacuum psi is required in the mixer?
  • D4 is banned. If I'm not mistaken, D5 is restricted only in some countries. Thus D6 would be the best one, regarding worldwide regulations. Now, regarding performance the higher the cyclomethicone, the less volatile it becomes. You'll need to test …
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