thebrain

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thebrain
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  • @Belassi LOL yes, I don't know where I came up with that one. @Bill_Toge Thanks, good idea. I've mapped out most of the ingredients that I need, it just a matter of sourcing them. Many are easy to get because they are also used in cosmetics and oth…
  • While I was working on an "natural" APG shampoo formulation, I experimented with a whole bunch of gum and cellulose thickeners. I wasn't very impressed with most of them, but sclerotium gum wasn't bad. The downside is price--it's not cheap…
  • @Belassi Maybe you already know this, but a good rule of thumb is to take your EBITDA and apply a multiple for this based on your industry. This will give you the enterprise value. Check this out: http://pages.stern.nyu.edu/~adamodar/New_Home_Page/d…
  • @chemicalmatt I think anyone making natural soaps is not going to want to add synthetic surfactants to their formula. IMO, you either do one or the other. I have made natural liquid soap using a similar formula with glycerin (aka glycerin liquid so…
  • @Bill_Toge Thanks for your feedback. I was a little worried when they called and asked me if I had ethoxylated surfactants in my formula. It's a little strange because there is conflicting product literature. The TDS says it's compatible with a vari…
  • @MarkBroussard OK, I give it a shot with my Silverson. If that doesn't do it, I don't know what will. I'm waiting for a sample of Euxyl PE 9010, so I may as well try to make the GSB work. If it doesn't, hopefully I'll have better luck with the Euxyl…
  • @David08848 I'm not sure where SoapQueen comes up with 130F. AFAIK, sodium lactate is not a heat sensitive ingredient, and is often included in the heated phase when making cosmetics. I've used it in HP and CP soaps and I haven't had any problems wi…
  • @David08848 I make soap with sodium lactate as well. I don't ever recall there being a concern with heat stability. What's the problem with using it? Is it just the heat sensitivity that you're concerned with? My notes indicate that it should be dis…
  • @MarkBroussard The challenge for me is that I'm supposed to mix cationic guar in room temperature water by itself. So to do what you suggest, my procedure would have to look something like: 1. While mixing (high shear), add GSB to water 2. Heat sol…
  • Surfactants are a sulfate-free blend at 15% ASM. The only notable ingredient there is Colonial Chemical SugaQuat TM-8610, which I believe is cationic, but supposedly is OK with anionics, non-ionics, and cationics.  Other ingredients: Panthenol 0.5%…
  • @Belassi Yes I built an Excel file that allows me to calculate my costs based on raw material inputs. I'd love to use just sodium benzoate (very inexpensive), but my target pH is 5-5.5, as my surfactants are most effective in that range. I'm not sur…
  • @Kimluow I'm currently waiting for a sample of GSB for testing, but I've heard that it helps to heat GSB to 70C in the water phase. I don't know if this is simply to prevent emulsion issues or if it helps with the pH drift (or both). I think sodium …
  • @arizona1az420 I recently purchased a Scilogex MS-H280-Pro. It's sold on that website (you'll need to buy the stand and support clamp as well). I've been using it for small 100g shampoo samples, and it handles the viscosity just fine. I agree with t…
  • @Belassi: You may also want to consider Linatural MBS-2 from Lincoln Fine Ingredients: Caprylic acid, 1,3 Propanediol, Lauric acid and Potassium Sorbate. It's NPA certified and naturally derived. It has a mild odor--nothing unpleasant, and it's easi…
  • @Bill_Toge thanks for the recommendation!
  • I'm going to need to buy a Brookfield viscometer soon. I need to be able to measure viscosity initially for shampoo and conditioner, but eventually lotion and body butters too. I don't need anything fancy, and I'm trying to be cost conscious. What m…
  • Those Chinese machines are so cheap that even if it doesn't work for you, it's not a huge loss. For that same reason, I bought a cheap Chinese magnetic stirrer on eBay for $80. A trusted name brand is $400+, but the difference in price made it worth…
  • @Nanda: I'm glad it worked out for you :) You're welcome.
  • @AnnalisaB: Yes, it can function as a mixer because it has very precise speed control; however, it works differently from an overhead mixer. There are going to be some applications where a mixer is going to work better than a homogenizer, and vice v…
  • @AnnalisaB: Honestly, I don't know. It would probably work. I ended up buying the pricey Silverson because it has a good reputation here. I can usually get away with mixing my test samples with a $10 mini hand mixer, so I see no reason why you can't…
  • @Bobzchemist As someone without a cosmetic science background who's trying to get in to the industry, thank you for your advice here. Myself and others have benefited greatly and we appreciate it. While you may be correct that there are some home-ma…
  • @Microformulation: Mark, I agree with everything you said except your last line. You can learn formulating over the internet just as well as you can myriad other subjects. Perry wouldn't be offering a course if it wasn't possible, and there are lots…
  • @Nanda: If I use the right ratio, it remains stable and completely clear even if I store it in my refrigerator. 
  • @Nanda: One of my shampoo formulas contains SCI, so I have some experience with it. I also live in an area with cold winter climate, and you're on the right track believing this to be an issue with temperature. SCI is nearly insoluble in water, but …
  • @Bill_Toge: Thank you for your feedback. I feel a little better now knowing that my safety measures are adequate.
  • @Belassi: Excellent, I will try that--thanks again! My formula has a good percentage of APGs (i.e. decyl glucoside) and sodium methyl cocoyl taurate. I don't know how good they are as emulsifiers, but everything was fine until I tried to go above 0.…
  • @Belassi - Thanks for explaining the science behind the phenomenon. Yes, I've been adding the essential oils after cool-down to the diluted solution. I can certainly try to pre-mix the oils with the best emulsifier, but that brings up two questions:…
  • Thanks for the answers. @Perry - I have the same opacity issue when I use GCC as a thickener or salt. Does the salt also have a solubility issue? It's clear until I add the oil (or the oil+surfactant is clear until I add the salt).
  • I'm curious; EOS claims that their products are hypoallergenic. Because some of the essential oils are known to cause allergic reactions, how can they make the hypoallergenic claim? I assume they've done claims testing. Any idea what the threshold i…
  • @Bill_Toge: You have worked with the powder? Do you think my safety precautions are adequate then?
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