OldPerry
Forum Replies Created
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We had 5 tanks, 2 batches a day. If they were making the same flavor of shampoo, they just rinsed out the container & made another batch on top
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The manufacturer I worked for sold VO5 shampoo, about 40 million units a year. I think we would make about 10 batches of 2 or 3000 gallons a day.
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Actives are put in skin serums as marketing story ingredients. They are not expected to have an actual effect. So, no special solvent is required.
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Interesting. I was under the impression that Hydroquinone was still OTC in the US but that changed in 2006. Wonder how I missed that.
This press is weirdly written though. They seem to equate Hydroquinone (which you can get as a prescription) and Mercury which you can’t use at all right?
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We retested a formula (stability testing which also involved micro challenge test) whenever
1. new raw material supplier
2. new ingredient
3. new manufacturing method
4. cost savings formulation changes -
To be fair, you can’t drink the water in Jackson, Mississippi, USA today
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For the curious, here is information on Biolin.
It’s a pre-biotic sugar so preservatives will likely have no impact on the material.
Of course, the reality is that this is simply a claims ingredient. As far as product performance goes, the consumer will unlikely notice ANY difference whether the ingredient is in your formula or not.
The claims are all written to sound like they are saying something without saying anything. What exactly does it mean when they say it “…Works with the body. Supports the natural Lactobacillus barrier”? What doesn’t support the lactobacillus barrier?
Then they provide no peer reviewed evidence. They simply claim their products are clinically proven. It’s pretty easy to clinically prove anything, especially if you don’t show the test that you did.
Currently, not enough is known about the skin microbiome & what is good or bad. Ingredients that promise to target it are just marketing stories.
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Coco sulfate and Lauryl Sulfate are pretty much the same in practice. The difference is a slight variation in the distribution of fatty acids. Yes, you can mix SLES and SLS or Coco Sulfate
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“In underdeveloped countries they drink any type of water they can find so that may not be an option.” - good point.
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Generally, if the water is drinkable, it’s probably ok for a cosmetic product. You might need extra chelating agents in your formula but it should otherwise be ok.
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Yes you should declare every ingredient you purposely add to a formula
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@Red_Head - It’s a good question. I’ve not worked at P&G so I can only guess. However, I think they use it because it works well enough, at the right price, and is probably easier to remove from hair with a shampooing. Also, more deposition doesn’t necessarily equal better conditioning.
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Yes it’s safe
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It’s logically not possible to exceed 100%
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It has nothing to do with the fatty alcohols. Rather, it is the Stearamidopropyl Dimethylamine and the Bis-Aminopropyl Dimethicone, plus it has a very well liked fragrance.
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There is no definitive rule. Usually, people use more stearyl alcohol than cetyl because it has a higher melting point so will be more stable under warm storage conditions. But every system is different. You just have to experiment & see what works for you
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That sounds like a reasonable amount.
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Yes, safe to use but sounds like more than you need. You could probably cut the percentages in half and not notice a performance difference
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Stability testing
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For the uninitiated… PE9010 is from Ashland and called euxyl™ pe 9010
INCI name: Phenoxyethanol (and) Ethylhexylglycerin
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My answers come from the experience of using both of these ingredients in numerous formulations & batches. I never neutralized SAPDA nor acidified GHC.
But that’s how they behaved in my systems. Perhaps your experience will be different -
1A - Yes, you can heat those ingredients
1B - No, you do not have to heat them unless they are solids in which case, yes you have to heat them.2A - Just add it to the water phase (before heating). GHC. For Stearamidopropyldimethylamine, add it to water when the temperature is above the melting point (~65C)
2B - For a hair conditioner, lower. pH ~4.0
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Looks like for a leave on product it has been deemed safe up to 6%
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Sunscreens are an over the counter drug in the US (OTC).
The main functional ingredients are sunblockers like Zinc Oxide, Titanium Dioxide, oxybenzone, octinoxate, octisalate or avobenzone.See this for more.
https://www.chemicalsafetyfacts.org/chemistry-context/sunscreen-summertime-safety -
They are not following proper labeling rules so we can only guess what’s in the bottle. Perhaps they just didn’t list the emulsifier