OldPerry
Forum Replies Created
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You can read more about preservatives here.
My opinion is the most effective preservation systems use parabens and formaldehyde donors. The ones you listed aren’t nearly as effective. -
Oral care products are regulated by the FDA and many are considered cosmetics.
You can find more information at the FDA website. -
I don’t know what you are talking about.
If the ingredients are giving you the results you want then they are not high. If you are not getting results you want then you either increase or decrease the levels. The exact percent you use depends on many factors including the ingredient you are using, the way it was made and the quality of the raw material source. You have to experiment to optimize the level of ingredients. Start with a knockout experiment. -
I don’t see anything in the formula that would cause dandruff. To figure out what is causing the problem you should do a knockout experiment.
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@bemine84 - The link has been fixed.
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Yes, there are official guidelines on how you are supposed to list ingredients. They are published in this book
If you are using water as the most abundant ingredient in your formula, you have to list WATER as the first ingredient.
Even if you are using flower and fruit waters you are still required to put WATER as the first ingredient. Companies that do not are not following proper labeling rules.The only way you can avoid listing water as the first ingredient if it is the most abundant is by ignoring the labeling rules. -
You will need to list all of your ingredients and ideally the percentages for anyone to be of much help.
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You could try contacting Colin of Colin’s Beauty Pages. http://colinscosmeticconsultancy.co.uk/
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I’m not affiliated with either of those companies but I have taught a course on formulating natural products if you would like to chat. Send me a message.
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I haven’t used these particular products so can’t give a definitive answer.
However, I would not test all of the samples. I would just take the highest number 224 and the lowest 117 and run tests on those. I figure the numbers are indicative of something about the molecule (maybe molecular weight).But the supplier should also be able to tell you the differences which would help you decide which is most appropriate. -
@_joy_ according to this scientifically controlled comparison study, EcoSmart does not work as well as other options.
“Ecosmart Organic Insect Repellent resulted in a strong reduction of attraction at 0 min, but this effect did not persist after 30 min or any of the later time points.”
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Ingredient suppliers are motivated by product sales so the studies that they show you should not be considered definitive proof. I’m not suggesting they are lying, but they only show you the data that proves the conclusion they want.
This is why you have to be very skeptical of any supplier data. It’s good direction but usually they give you a misleading conclusion. -
That partly depends on why you are including them in the formula.
Vitamin C won’t be actively stable so it doesn’t much matter when you incorporate it. It’s water soluble so put it in your water phase.Vitamin E is oil soluble so put it in when you start your cooling phase. -
@Chemist77 - great resource!
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Thanks! Happy Thanksgiving to you and everyone else who participates here.
I’m extremely grateful for the time and expertise that you put into this forum. -
“Since cosmetics are part science and part self-delusion with a heavy dose of marketing, I really don’t think that doing a blinded study on yourself is going to tell you very much or provide much guidance.”
@MarkBroussard - I agree with you on that. -
That’s a lot of glycol distearate! You could make 540 lbs of shampoo.
Sorry, I don’t need any at the moment but perhaps someone on the forum will. -
If you want a creamy appearance get rid of the Cetyl and Ceterayl Alcohols and use 1% Glycol Stearate (EGMS)
Also, I’d suggest you do a knockout experiment to see what effect each ingredient is having. -
Here’s some information on HLB.
But the HLB system simply tells you what ingredients to use together. It does not tell you how much of the ingredients to use.To figure that out you have to experiment. It depends on the materials but a 1:4 ratio of emulsifier to oil phase is a reasonable place to start. So if you have 24% oil phase you need about 6% emulsifier.To your second question…the % of the formula should always equal 100% but if you make any adjustments of your ingredients you subtract that amount from the main solvent which in your case is water. -
I’m not sure what you mean by degreaser. Is this for a person (as in degreasing hands), for tools as in cleaning them, or for some other purpose?
Do you have a product example you could share? -
If you want the most effective, least problematic preservative then you should use parabens.
The other thing you might consider is figuring out whether those actives actually have an effect when applied from a topical cream. Make a batch with and without the actives. On a blinded basis can you tell a difference? If not, that tells you something about how much or how many of these actives you should include.This post is relevant. - Extracts in cosmetic formulas -
All good suggestions. There might also be some interaction with the Polyquat 7 and another ingredient so if you are looking for more knockout experiments, making a batch without the PQ7 would be another thing to test.
Of course, I’m not sure why you say you’ve done a ton of knockout experiments. If you do them systematically you shouldn’t get confused. If you did a complete knockout experiment with your formula you could do it in a maximum of 10 batches -
Hello,
No problem. I’m glad you’ve found in useful.Perry, 44 -
I’ve never heard of salt reducing foam either. That wasn’t my experience with anionic based detergent systems.