Bobzchemist
Forum Replies Created
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pcpc buyers guide:
Laureth-4 (INCI) Albright & Wilson UK LimitedCentonze Emanuele SAClariant International Ltd,Colonial Chemical IncCosmetic Supplies USACroda, Inc.Ethox Chemicals, Inc.Evonik Industries AGGlobal Seven Inc.Jeen International CorporationKao Chemicals GmbHKolb Distribution Ltd.Lambent TechnologiesLamberti S.p.ALanaetex Products, Inc.Lipo Chemicals, Inc.LonzaMaking Cosmetics, Inc.Nikko Chemicals Co., Ltd.Protameen ChemicalsRhodia Inc.Sabo s.p.a.Sasol Germany GmbH - MarlSasol North America, Inc.SeppicSurfactants International LLCToho Chemical Industry Co., Ltd.Universal Preserv-A-Chem, Inc.Zschimmer & Schwarz GmbH & Co KG -
I guess what I meant is that no one in their right mind would ever even attempt to use potable alcohol in a hand sanitizer, but also that the only difference between potable/intoxicating alcohol and denatured alcohol is a very tiny bit of a very bitter chemical added to make it undrinkable by most people.
Someone who was actually concerned about avoiding ethyl alcohol would insist on isopropyl alcohol insted - denatured alcohol can still be consumed and will make people drunk - although shortly afterwards, they will be very sick. -
Selling an insect repellent puts you under the jurisdiction of the EPA. I’d research the regulations carefully, if I were you. They are NOT the same as cosmetic/OTC regulations (which you are also still subject to as well, because the product is applied to skin)
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“Marketed” being the key word here. You can use the same shampoo formula for 4 different hair types - just be careful to mix up the below 1% ingredients so that it looks like a different formula.
The manufacturer in China, though, is lying to you. I would stay away, personally. -
What research have you done on your own to answer this question? If you tell us where you’ve looked, we’d be happy to make some suggestions of additional resources.
Additionally, you’ll need to talk to a fragrance house about the fragrance - we can’t help with that.Lastly, someone has given your client bad information about alcohol. Why didn’t you explain the differences to him? -
The issue won’t be with your formulations compatibility among it’s own ingredients - it will be with other formulations compatibility with your formulation. Since yours has the potential to significantly degrade or even completely destroy the performance of other peoples products, the contract manufacturer will need to take extra special care in cleaning the manufacturing/filling equipment they use for your product as soon as they’re finished with your run. There will very probably be an additional charge for that extra cleaning.
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Most times, it pays to change just one thing at a time. That way you know what change does what.
For Polysorbate 20, use it at 1:1 with your fragrance to begin with. Pre-mix it with the fragrance, and then add the mixture when you usually add the fragrance. -
Rosamox
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I’m certain that you could make a very nice grapefruit juice based toner, and possibly an AHA-type treatment serum, if you filtered the juice really well first.Of course, you could probably make more money just boxing up the ripe fruit and selling it to be shipped up to the US, but that may be more hassle than it’s worth.
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We see it all the time here at Beaumont, where we make quite a few citrus-based products. It’s mostly an oxidation problem. You either have to use an anti-oxidant or live with the color change. De-colorized versions only remove a small amount of the problem. It’s possible to color products beforehand to minimize the effect of the color change.
Most of our consumers seem to be OK with the concept that natural-based cleaning products vary in color and/or change color over time, by the way. -
There are many surfactants that might work to solubilize/micro-emulsify oils/butters into a surfactant solution and produce a clear product. There are even more that would simply macro-emulsify them and produce an opaque product. We’d need to know your definition for “natural” to recommend one, though, and it would be much better if you’d disclose more of your formula.
One of the things to recognize is that you’re using the term “emulsify” somewhat incorrectly. To emulsify is to take two immiscible phases and mix them together to form a uniform product with droplets of one phase dispersed throughout the other phase. You’re already getting that, but your emulsion isn’t stable, which is an entirely different problem from not emulsifying at all.To determine if you are getting benefit from the oils/butters, make three batches without the Guar. One with no oils/butters, one with 1/2 your usual amount, and one with the full amount. Try them on your own hair, and give them out to other people to evaluate blind. If no one can tell the difference between the three, your not getting any benefit, but if there is a clear improvement as you go up in concentration, then you are. But if If no one can tell the difference between the half concentration and the full concentration, then you are getting some benefit from the oils/butters, but you’re using at least twice as much as you need to be.You could also send the shampoos out to an analytical lab for analysis, but that’s probably overkill. -
The other thing to keep in mind is that actual “table salt” is not pure salt. It almost always has a flow aid added to it, usually silica or calcium silicate, to act as an absorbent for atmospheric water vapor. (If it didn’t, it would quickly become a solid block). Find a source for pure salt.
Also, if you can’t afford deionized water, you will absolutely need to filter the tap water very well.Tell us how clear your formula is without fragrance, and we can go from there. -
The bad press for Dimethicone is pure scaremongering. It’s very safe, and there’s no limit on how much you use. In fact, depending on the facility you make it at, you could claim an OTC monograph status for your product.
Some of the bad press originally comes from the use of Dimethicone in hair care, where it has a problem with build-up. This planted the seeds of “silicone=bad”, and the fear merchants were off to the races.The other thing to keep in mind, though, is that Dimethicone 350cst does not play nicely with many other lip product ingredients. As a result, there may be an extra charge for the additional clean-up time required from the manufacturer. -
The largest use I know of is in making “melt and pour” glycerin soap. Talk to me privately if you want to try this.
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We have - we test quaterly.
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Can you substitute Cetearyl for Cetyl?
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@luiscuevasii, you need to understand what’s going on with paraben deactivation, though. It’s not a catalytic reaction, or some kind of unknown activity where a tiny bit of emulsifier or cellulose deactivates all the parabens. If you want to use parabens and non-ionic emulsifiers/cellulosics together, you can do that - you just have to use more of the parabens - enough so that you overwhelm the deactivation.
What we do is commercial formulation, though, and adding more parabens costs more money - usually enough money that other types of preservatives become more cost effective in a formula containing those deactivators. So, as a general rule, we don’t combine them in the same formulations. -
We use Amazon exclusively at Beaumont.
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The only way I know of to accurately measure “the absorbed amount or the infiltrated amount into the skin after applying the cosmetics.” is to physically remove skin layers using the tape stripping method (http://www.ncbi.nlm.nih.gov/pubmed/18775778), and then to chemically analyze each layer removed. As you might imagine, finding a volunteer to have a patch of skin removed a layer at a time with adhesive tape isn’t easy.I am unaware of any machine or method that would do this in any other way, and I imagine that such a machine, if developed, would cost many hundreds of thousands of dollars – which would render it useless for all but the wealthiest companies.
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Each paraben is effective against a different range of organisms. Using just one is asking for trouble. Your best bet is to use a pre-made mixture.
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Just out of curiosity - why would anyone be putting mineral oil on their hair? I can’t even imagine a scenario where that would feel pleasant.
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The combination of requirements: stable particle suspension, serum-type viscosity, anhydrous, silicone-free, dry (non-oily) finish, and only vegetable-derived ingredients is almost impossible to achieve. If I were given this project, I would estimate that it would take 18 - 24 months, and would have about a 30 - 40% chance of success.
You might want to think about reducing your requirements considerably. -
It’s funny how that always happens…
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I’d be concerned if I was off by more than a percent or two. I’d be deeply concerned at being off by 10% or more.
Which brings up an interesting question. How many formulators compensate for evaporative water loss by adding more water?