David
Forum Replies Created
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Iodopropynyl Butylcarbamate is banned as a preservative in body lotion and body cream in EU
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@Doreen81
1. the “good properties” has first to be defined.
2. this(heat vs no heat) has never been documented as far as I know.
3. In general heating (=energy) induces change (chemical reactions) and things could therefore happen. If you believe in the good properties of Aloe, handle it with care. -
@Perry , thanks, no I am not worried.
The creative part in formulating is very hard to replace by AI - maybe even harder than making a self-driving car? -
@johnb - that’s true - hey Perry- delete!
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As far as I know there is no formulation software so far. Once the formulation is ready - yes - there are plenty calculating price and INCI. But formulation software could be a winner - automatically calculate HLB - suggest emulsifiers when formulation goes wrong - preservatives suggested automatically based on pH and type of product..could be a nice idea.
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-it should of course be added. No water - no pH.
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Here’s a good example:
https://chemistscorner.com/cosmeticsciencetalk/discussion/3157/olivem-1000-in-an-solid-anti-dandruff-shampoo#latest
Is this somebody seriously trying to make an anti-dandruff cream shampoo (for whatever reason) or a DIY that wants to create an anti- dandruff shampoo? Or something in between? -
@johnb & @Perry
Yes! I’ve been thinking the same!
DIY needs quite different answers and advice than people already working years as formulators in a lab. -
I would add
5. good knowledge of statstics, so you can formulate without getting biased (fooled) by raw material suppliers’ and other marketing peoples’ graphs and brochures. It also helps when performing your own experiments. -
pH affects many cosmetic formulations. It is however impossible to say if lactic acid has any effect on this formula just by looking at the LOI. It can theoretically be a just a trace amount from an extract.
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@tai961 -If I were you I’d drink a beer instead.
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@eisen , no it just means that what they are using is dead- anything else is “forbidden” - or more accurately as @Bill_Toge pointed out - has to pass the COLIPA standard for microbial quality.
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inci of chrisal soap : AQUA (WATER), SODIUM LAURETH SULFATE,
ACRYLATES/STEARETH-20, METHACRYLATE
COPOLYMER, COCAMIDE DEA, PEG-6
CAPRYLIC/CAPRIC GLYCERIDES, POTASSIUM
HYDROXIDE, FRAGRANCE, BACILLUS FERMENT,
CI19140, CI61585 -
@eisen Lactatyd uses normal preservatives -like phenoxyethanol and isothiazolinones…
http://www.codecheck.info/kosmetik_koerperpflege/koerperpflege/intimpflege_reinigung/id_385769/Lactacyd_femina_plus.pro -
I may have missed something but this makes no sense to me.
1. Living bacteria in cosmetic products (good or bad) are forbidden in EU.
2. Tyndallisation is performed at 121 °C for 15 minutes (see wiki) and still not reliable
3. Just add level 5 - make sure everything is dead - and your juice might be successful!
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The Cosmetic Ingredient Review (CIR) published the safety assessment of sodium cocoyl isethionate
with the conclusion “safe for use in cosmetic formulations at 50% in rinse-off products and at 17% in leave-on
products
This % doesn’t however guarantee that your product passes a cosmetic product safety assessment if that’s what you mean. Regarding Microbiological quality and stability, you always need to prove both according to the EU regulation. This is done with testing and/or scientific reasoning. What is needed exactly varies and should be discussed with your safety assessor. -
There is a difference between monitoring bacterial growth (by adding bacteria) and testing whether there is any bacteria already in the product.
For the first option you’ll need a micro lab, for the second you’ll just need what @Perry suggested. -
For beeing an Ecocert/Cosmos material it works fine and I had success with it. However, I wouldn’t dream of using it unless a certified end product was requested from my customer.
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As @Bill_Toge says - SLES 28% batches can really vary - from my experience usually corrected at the end of the process with salt.
High shear + polymers like carbopol could also lower the viscosity. -
The first/second list makes no sense at all… Silk Protein,Sorbitol Esters, Essential Oil Blend -also no INCI.
The other list looks like some chemist had a closer look and corrected the first list. -
There is no definition of what a mud shampoo is. You can just use any (sulfate free) shampoo and put 0.01% dead sea mud in it - and you have a mud shampoo
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Use diluted NaOH. (Correct for the additional water)
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Option 2 looks good.
It depends very much on your formulation as well. In the first factory I worked I had to adapt the formulation (or production process) to the equipment rather than the other way around. E.g. by heating the shampoo/body wash mixture slightly your will need less sofisticated mixing equipment.