Adamnfineman
Forum Replies Created
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I’ve been doing some reading on the use of HLD (Hydrophilic Lipophilic Difference) instead of HLB. I’m about halfway through the book and it points out the flaws of HLB and how HLD could be used to fill in the gaps if you have the right information. Even if you don’t have the information to plug into HLD, the theory in the book is useful and would answer some of your questions.
https://www.stevenabbott.co.uk/practical-surfactants/the-book.php
stevenabbott.co.uk
The Book | Practical Surfactants Science | Prof Steven Abbott
Surfactant Science: Principles and Practice free eBook
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I was looking into the same issue a few years ago. @MarkBroussard commented on my post advocating for Euxyl PE 9010. He used it in an eczema suite and it was the best tolerated option. As others mentioned in the post, it isn’t enough on its own to be considered a broad spectrum preservative and should be accompanied by a chelator and something to target fungi.
chemistscorner.com
Does anyone have experience with Colloidal Oatmeal Lotion formulation for eczema? - Chemists Corner
I'm interested in making a product similar to Cetaphil's Baby Eczema Soothing Colloidal Oatmeal Lotion. I looked through the forum and still had a couple…
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I agree with @ketchito, focus on what the FDA has approved for use as skin protectants and work your way from there. This is what they consider skin protectant actives:
https://www.ecfr.gov/current/title-21/chapter-I/subchapter-D/part-347/subpart-B/section-347.10
I also have eczema and found that a generous amount of skin protectants, humectants, and occlusive agents worked best for me. I looked into making a two part treatment a while ago but have settled on only using the colloidal oatmeal moisturizer (linked below). It has greatly reduced the frequency and duration of my flare ups. If you have any questions about the formula feel free to pm me.
https://chemistscorner.com/cosmeticsciencetalk/discussion/two-part-eczema-treatment/
ecfr.gov
21 CFR 347.10 -- Skin protectant active ingredients.
21 CFR 347.10 -- Skin protectant active ingredients.
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How do you manage navigating all those tabs?
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Hi, it looks like you’re missing an emulsifier here. Your fatty alcohols can support an emulsion but they won’t cut it on their own. A pretty common one in conditioners is Glyceryl Stearate SE.
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I would read this as more monoethanolamide.
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I think you’re looking for pre-dispersed polymers/thickeners such as:
Aculyn 22 (Acrylates/Steareth-20 Methacrylate Copolymer)
Crothix Liquid (PEG-150 Pentaerythrityl Tetrastearate (and) Aqua (and) PEG-6 Caprylic/Capric Glycerides)
Carbopol Aqua SF-1 Polymer (Acrylates Copolymer)Look at the literature for each as the Aculyn and Carbopol need to be neutralized to get your viscosity. You might have to add a bit more than 0.5-1.0%.
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It doesn’t seem like you listened to any of us when you posted this same thing last time. How would you like us to help you when you don’t help us?
chemistscorner.com
What is wrong with this formulation?Nitrosol EDTA carbomer white oil sunflower seed oil IPM shea butter Cetyl Alcohol Stearic Acid Emulsion wax Silicone Oil Dimethicone…
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It seems this post was made at the same time as the one I linked and isn’t a copy of the last post, my apologies.
We still need the information requested to be of any help.
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Could you share your formula or at minimum the list of ingredients? Expansion can be a preservation issue.
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Glad you could confirm you do indeed have skatole.
I’m even more curious about the application now. Is it one of those bathroom sprays meant to eliminate malodors if you spray it in the bowl before doing your business?
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You’re welcome
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The link to the book is on the page linked in my original message, it’s free and open to the public. Here’s the link to the pdf.
https://www.stevenabbott.co.uk/_downloads/Surfactant%20Science%20Principles%20and%20Practice.pdf
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That sounds like quite the ordeal you had to go through. I’m glad to hear you found something that works for you.
This formula is for personal use only and has remained pretty similar to what I posted earlier.
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I don’t see Jeecide AA or its INCI mentioned here.
To answer your question I did not use it. I ended up taking @Abdullah‘s suggestion of phenoxyethanol + parabens + EDTA. I didn’t have any issue with this blend as far as sensitization or preservative failure.
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I also premix certain gums with glycerin. I found that adding the premix in aliquots and mixing thoroughly in between helped reduce the amount of fisheyes or agglomerations I saw.
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What’s your process for adding and mixing gums?
Which gums have you tried?
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Unfortunately, I don’t have an answer. I haven’t seen those units of measurement and google isn’t bringing anything up after a 10 minute search.
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True, though it is a start.
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I think you forgot to answer a question.
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Hey Ray, why do all your comments sound like AI and include a link?
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Add more ceteareth-25 or replace some of it with ceteareth-30 or both.
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Weird, I added the whole brochure and only the first page is showing. In case it happens again, the INCI is [Glucosamine HCl (and) PCA (and) Glutamine (and)
Lysine HCl (and) Betaine (and) Yeast Beta Glucan]EDIT: It seems you have to download the file to see the rest of the brochure.
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This reply was modified 4 months, 2 weeks ago by Adamnfineman.
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This reply was modified 4 months, 2 weeks ago by
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Would this material happen to be ScentARC?