

OldPerry
Forum Replies Created
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OldPerry
Professional Chemist / FormulatorAugust 15, 2019 at 1:51 am in reply to: hydroxyethyl cellulose in formulationsI always put it in slowly as a powder into the water phase. Cold water helped too.
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OldPerry
Professional Chemist / FormulatorAugust 15, 2019 at 1:46 am in reply to: Adding Biotin in Hair productsWhile it doesn’t do anything, if you want to incorporate it in the formula just mix it into the water phase until it dissolves.
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This is exactly why when asking a question about a formula, you should put the entire formula or at the very least, the entire ingredient list.
BTMS & shea butter do not seem like a good ingredients to use in a leave-in conditioner. Maybe in a hair styling product but not a leave in conditioner.
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OldPerry
Professional Chemist / FormulatorAugust 14, 2019 at 1:28 am in reply to: Turmeric/Curcuminiod-related Topical Ingredients that DO NOT Promote Skin Whitening?I don’t think any tumeric/curcuminiod extracts have been proven to significantly lighten skin. For example, the data published here is pretty weak in that regard.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6269853/#B24-molecules-18-03948 -
OldPerry
Professional Chemist / FormulatorAugust 13, 2019 at 6:22 pm in reply to: Hair styling - washing outAs @Gunther said, for hold PVP or PVP/VA are the ones that are most effective and washable.
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@margi - well, you may be able to get a sample to an analytical chemist who could figure out the relative percentages, but in general no you won’t know the percentage of each ingredient.
Think of this preservative blend as the company’s formula. Almost no company liberally gives away their formulas for competitor’s to copy.
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OldPerry
Professional Chemist / FormulatorAugust 13, 2019 at 1:42 pm in reply to: W/Si leave in conditionerIn my opinion, 20% dimethicone is overkill. It is going to coat the hair and attract dirt/dust. I would guess that 5% dimethicone is plenty.
Also, 1% polyquat 10 is probably too high also. While that much makes sense in a rinse off (much of it washes down the drain) in a leave on you could get away with 0.2% maybe.
There are leave-in serums that are primarily silicone but I can’t think of a silicone only leave-in conditioner. However, a leave-in conditioner will usually have a good amount of silicone (but less than you have) and it will have a cationic polymer/surfactant. This is because the silicones are good at coating the hair and providing shine, while the cationics are better at reducing static charge. In this way you get the best of both types of ingredients.
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OldPerry
Professional Chemist / FormulatorAugust 13, 2019 at 1:33 pm in reply to: What is your favourite conventional emulsifier?@ngarayeva001 - I have not seen any scientific evidence that aspirin works for this.
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OldPerry
Professional Chemist / FormulatorAugust 11, 2019 at 6:32 pm in reply to: Clay mask and shrinkageIt’s hard to give you good answers because you haven’t provided enough details. For example,
1. What are all the ingredients in the formula? (You’ve given a general list but specificity matters).
2. Maybe you show a picture of the product?
3. What did you find in your heat stability testing? (did you run these?)It’s a packaging issue so the easiest thing to do is to get better, air tight packaging.
As far as antimicrobial goes, unless you’ve done preservative efficacy testing, you won’t know if the ingredients you are using are appropriately preserving the products. If you are relying on the ingredients you said, it’s highly unlikely that your product is adequately preserved.
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OldPerry
Professional Chemist / FormulatorAugust 11, 2019 at 6:21 pm in reply to: Hair styling - washing out@RickS - You’ll have to clarify what you mean by “natural”. It’s possible you’ve reached the maximum hold potential by using naturally occurring materials.
The reason companies use synthetic ingredients is because they work better than ones that are not synthetically modified in the lab.
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OldPerry
Professional Chemist / FormulatorAugust 9, 2019 at 1:09 pm in reply to: Assay/ concentrationIf you are adding 10% of a 69% SLES solution, that means you are adding 6.9 grams in 100 grams. So, to get 6.9 you would need 24.6% of the 28% solution. Then subtract the excess volume from the water.
Yes, that would work.
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OldPerry
Professional Chemist / FormulatorAugust 9, 2019 at 12:56 pm in reply to: Clouding of aqueous solutions by euxyl® PE 9010 preservativeI would guess it is just some insoluble organic matter from the botanical harvest. Maybe they didn’t filter it the same way this time.
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OldPerry
Professional Chemist / FormulatorAugust 8, 2019 at 8:56 pm in reply to: Assay/ concentrationIf you need 69% SLES in your formula and the raw material is supplied as 28% you won’t be able to do it. You would have to evaporate off some of the water to increase the concentration of SLES.
For every 100 grams of a 28% solution you put in, you are only putting in 28 grams of SLES.
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OldPerry
Professional Chemist / FormulatorAugust 8, 2019 at 1:32 pm in reply to: Which ingredient in this lotion causes tingling under eyes?Thanks for the update!
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OldPerry
Professional Chemist / FormulatorAugust 7, 2019 at 12:32 pm in reply to: What do you think of this hair conditioner?It won’t be very conditioning. You need a cationic surfactant like Cetrimonium Chloride. And the questions @ngarayeva001 has posted are relevant too.
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OldPerry
Professional Chemist / FormulatorAugust 7, 2019 at 12:27 pm in reply to: What is your favourite conventional emulsifier?@ngarayeva001 - I’m not sure how unpopular the opinion is. If you look at the best selling beauty products, they use synthetic ingredients. Certainly, the Internet makes it seem like there is this huge majority of people who want natural products but it still represents only about 15 - 20% of the market.
The fact that there is the “clean” beauty movement essentially demonstrates consumers are rejecting pure natural because they don’t get the same performance as standard products.
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OldPerry
Professional Chemist / FormulatorAugust 6, 2019 at 5:38 pm in reply to: stearyl alcohol be a substitute for cetyl alcohol?It depends on the application. Sometimes you can but sometimes you can’t. What do you want to substitute it in?
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No, it’s not likely caused by the BTMS if you are using it at proper levels. Here’s the safety information:
https://www.dropbox.com/s/7sawx5huvyjvdnh/behentrimonium-methosulfate.pdf?dl=0 -
OldPerry
Professional Chemist / FormulatorAugust 5, 2019 at 3:57 pm in reply to: Blackseed oil usage…For what purpose would you use Blackseed oil in a facial serum? What benefit will it provide?
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OldPerry
Professional Chemist / FormulatorAugust 5, 2019 at 3:54 pm in reply to: Tocopherol acetate in skincare: useful or useless?It is useful for marketing and story telling.
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OldPerry
Professional Chemist / FormulatorAugust 5, 2019 at 3:53 pm in reply to: Which ingredient in this lotion causes tingling under eyes?Some people experience tingling from Phenoxyethanol.
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OldPerry
Professional Chemist / FormulatorAugust 5, 2019 at 3:51 pm in reply to: Adding fruit/vegetable purees/juices@Janhavi - No, skin is not benefiting from putting fruit/vegetable purees/juices in soap. These are marketing gimmicks.
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OldPerry
Professional Chemist / FormulatorAugust 2, 2019 at 6:55 pm in reply to: Can I not use any preservatives in a toothpaste formulation?@Pharma - yeah, I get why marketers do it and that self-preservation is a real thing.
What I was lamenting was the fact that consumers find the phrase “no preservatives” compelling. It is all learned through fear marketing & refers to a feature of the product but not to any benefit. Saying “no preservatives” is as helpful as claiming “no radiation.” True enough, but so what?
On the flip side, there are lots of “no preservatives” or “no paraben” products that aren’t safe. Efforts to make a meaningless, fear marketing claim has resulted in the development of less safe cosmetic products.
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OldPerry
Professional Chemist / FormulatorAugust 2, 2019 at 3:14 pm in reply to: Can I not use any preservatives in a toothpaste formulation?I’ll never understand why people think a lack of preservatives is a positive thing.
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OldPerry
Professional Chemist / FormulatorAugust 2, 2019 at 4:33 am in reply to: email re “help me out” seeking donationsHello @Sheng
Yes, it is legit. I’m doing a charity bike ride this weekend and thought I would send something out to members of this group to see if anyone would be interested in donating. Also, I gave away a free cosmetic regulations report.
There is no obligation to donate and the report is free to download. I don’t often send out donation requests like this (last time was 6 years ago) but I think it is a worthy cause.
If you or anyone else is interested in donating, you can go here.
https://secure.nationalmssociety.org/site/TR?fr_id=30245&pg=personal&px=17537399Thanks again to everyone who participates in this forum!
Regards
Perry, 44