

OldPerry
Forum Replies Created
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OldPerry
Professional Chemist / FormulatorJune 21, 2017 at 9:45 pm in reply to: When your competitors are Liars and Cheats@diycosmetics - thanks for your perspective. I think one of the objections of many chemists in this thread is that iron oxides just aren’t natural but many companies market them as such.
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OldPerry
Professional Chemist / FormulatorJune 21, 2017 at 5:39 pm in reply to: Emcol E-607-S and Emcol E-607I’m not familiar but I did find reference to Emcol E-607S and Emcol E-607L
It’s not PEG-60 Castor Oil however.
From former chemical supplier Witco
Emcol E-607S - Steapyrium Chloride
Emcol E-607L - Lapyrium ChlorideFound in this book on Cosmetic Formulations.
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@pradeep - I’d suggest you see this discussion about salicylic acid
https://chemistscorner.com/cosmeticsciencetalk/discussion/comment/15149/ -
OldPerry
Professional Chemist / FormulatorJune 20, 2017 at 10:35 pm in reply to: Troubleshooting - magnesium stearateHere is what @DRBOB@VERDIENT.BIZ means by a knock-out experiment.
https://chemistscorner.com/do-you-know-the-fastest-way-to-become-an-expert-cosmetic-formulator/Essentially, you make a series of batches leaving out one ingredient. Then you see what happens to the final formula.
I would think the Plant Oil would be your “solvent”
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OldPerry
Professional Chemist / FormulatorJune 20, 2017 at 2:51 pm in reply to: virgin aloevera gelWhat is “virgin aloe vera gel”? What is it supposed to do?
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OldPerry
Professional Chemist / FormulatorJune 20, 2017 at 12:52 pm in reply to: virgin aloevera gelYou may have to clarify what you are asking.
What is a “virgin aloe vera gel”? Is there a product on the market called that?
What formula are you using currently?
What characteristics do you want to make better than the current formula? -
OldPerry
Professional Chemist / FormulatorJune 20, 2017 at 12:47 pm in reply to: Looking for a poor man’s mixer/blender (< $100)@Bernie_X - What size batch are you making? It looks so small.
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OldPerry
Professional Chemist / FormulatorJune 19, 2017 at 9:56 pm in reply to: FDA Cosmetic/Drug warning LetterInteresting. At least people now know the FDA monitors websites.
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OldPerry
Professional Chemist / FormulatorJune 19, 2017 at 3:16 pm in reply to: Looking for a poor man’s mixer/blender (< $100)A 40C water bath might work. You have to test it and see.
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OldPerry
Professional Chemist / FormulatorJune 19, 2017 at 1:09 pm in reply to: proven hair growth formulaMy 25% figure was based on my memory of studies. In looking up the published research I see I was not correct.
The effectiveness of Minoxidil is more like ~60%. This is based on a 1 year observational study of 984 men.
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OldPerry
Professional Chemist / FormulatorJune 19, 2017 at 1:05 pm in reply to: Looking for a poor man’s mixer/blender (< $100)The answer depends on what you are making the formulas for.
If you are making product that you wish to sell, then neither the mixer your using or a stick blender would be appropriate. A stick blender is strictly a hobbiest tool.
If you are just making product you want to use for yourself, you can probably just keep using what you’re using. But you need to make larger batches than 40 or 50g. At minimum you should be making 400 - 500 g batches. You can put the finished product in a warm water bath overnight to let the air bubbles resolve.
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OldPerry
Professional Chemist / FormulatorJune 19, 2017 at 12:40 pm in reply to: Looking for a cosmetic chemist freelancer to formulate foundation for my startup bizAnd those essential oils are some of the worst offenders when it comes to allergens.
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OldPerry
Professional Chemist / FormulatorJune 16, 2017 at 4:08 pm in reply to: proven hair growth formulaNo, this does not exist.
The only proven topical treatment is minoxidil and it only works for about 25% of people.
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OldPerry
Professional Chemist / FormulatorJune 13, 2017 at 2:06 pm in reply to: Thickening properties of cetyl alcoholYes, testing a placebo (blinded) is an important check to see if ingredients are really doing something or we’re just fooling ourselves.
When investigating facts, ideas and whether something is true, Richard Feynman said it best…
“The first principle is that you must not fool yourself and you are the easiest person to fool.”
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OldPerry
Professional Chemist / FormulatorJune 13, 2017 at 12:52 pm in reply to: Thickening properties of cetyl alcohol@Doreen81 - I’m curious, how do you know your anti irritants are having any effect?
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OldPerry
Professional Chemist / FormulatorJune 12, 2017 at 9:17 pm in reply to: Use of botanical extracts in haircare productsMy guess…no, they aren’t doing anything. But you should test as others have said to be sure.
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You might find our free report helpful. http://startacosmeticline.com
But I agree with @johnb. If you are going to start a cosmetic line creating the product is not nearly as important as creating a story and finding customers who want to buy it.
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Imagine if “natural” cosmetic marketers had to label what is actually in their products rather then just putting names like “jojoba oil”, “aloe vera gel” or “blueberry extract.” Ingredient lists would be unwieldy.
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OldPerry
Professional Chemist / FormulatorJune 6, 2017 at 4:42 pm in reply to: Formulating for the VaginaThe only conclusions you can make at this point is that one of your products is stable for 5 days at 55C and two of them aren’t.
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OldPerry
Professional Chemist / FormulatorJune 6, 2017 at 3:45 pm in reply to: Formulating for the VaginaNo. This isn’t a proper stability test. You can’t test a formula for 5 days at any temperature to predict a year or even 6 months of stability.
Also, 45C for 2 months (8 weeks) is indicative of 1 year.
There is no super short cut for stability testing.
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OldPerry
Professional Chemist / FormulatorJune 5, 2017 at 1:21 pm in reply to: Thickening properties of cetyl alcoholThat depends on what’s in the whole formula. The structure of cetyl alcohol in a system depends on many factors. However, sometimes it takes time for thickening to occur. Cetyl alcohol is not a good thickener compared to other things like HEC, Carbomers, etc.
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OldPerry
Professional Chemist / FormulatorJune 1, 2017 at 7:38 pm in reply to: Dimethicone - Long term side effects? Wrinkles?I’ve never seen any evidence that silicones would have this negative effect. Sounds like more fear marketing by “natural” brands.
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OldPerry
Professional Chemist / FormulatorMay 30, 2017 at 2:14 pm in reply to: Does heating destroy Aloe Vera’s properties?At best Aloe is a humectant / moisturizing ingredient so heating to temperatures below the BP of water won’t have any negative effect.
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OldPerry
Professional Chemist / FormulatorMay 26, 2017 at 12:40 pm in reply to: Liquid Nitrogen in Thermal Water@johnb - most hairsprays use DME because it has a good tolerance for water. This was required to meet the California VOC regulations of 55%. It probably wasn’t used more previously because it is more expensive than other propellants.