[David]

@PeiHoong
What I mean with traces (<0,1%) of water is that it is such a tiny amount that you don’t need an emulsifier. It’s hard to say from the LOI though.

[David]

If you have glycerine you have (traces of) water.

[David]

Is there such a thing as anhydrous glycerin? At least 0.5% is water if you use the 99.5%

[David]

@Perry  is right.
However, if you live in the EU you would probably have a safety assessor who you could ask those questions. (since you need a safety assessment to put a product on the market in the  EU)

[David]

If you want an oily shampoo, raise the oils and lower the oilremovers, i.e. the surfactants.
If you want a shampoo for oily hair do the opposite.

[David]

If you want to avoid allergenes on the label - add a perfume without those allergenes that need to be declared in EU.

[David]

lactic acid
https://www.amazon.de/Liter-Milchs%C3%A4ure-Lebensmittelquali%C3%A4t-E270-versandkostenfrei/dp/B00MOQIMQW/ref=pd_sbs_194_1?_encoding=UTF8&pd_rd_i=B00MOQIMQW&pd_rd_r=PZ748JNGSDTTW0TWPX24&pd_rd_w=HwsxC&pd_rd_wg=pTVE7&psc=1&refRID=PZ748JNGSDTTW0TWPX24

[David]

I don’t fully understand your reasoning.
First thought : - just use less Q10
second thought - ok, you like Q10
third - why try to hide it?
fouth - make it a selling argument: MY cream is yellow DUE to the Q10.

[David]

I haven’t tried more than 10 % in a gel but as with all cosmetic formulating testing is half the fun. In your case double fun 

[David]

Demi-permanent hair color is not very different from permanent hair color except it contains no ammonia (usually monethanolamine is used) and less peroxide. You can avoid PPD and resorcinol by using closely related compounds like Toluene-2,5 Diamine and methyl-resorcinol. Most of these hair dyes are actually “real” organic compounds and are synthesized by organic chemists… :smiley:
however, I suppose you mean something else by “organic”

[David]

Since PVP is probably the most easily available setting polymer- the first question to ask is : - what do you have at your disposal?

[David]

That depends on a lot of factors such as type of product, formula complexity, lab capacity, (client urgency ) and formulators’ experience.
However if you take 3 months stability test and challenge test into account, 2 months is of course unrealistic.

[David]

@Belassi -I thought ALS/SLS or SLES/ALES had very similar perfomance? Is this noted performance difference also true when calculated in moles active matter? ALS/ALES is not very popular in Europe  - don’t know why.

[David]

Contact e.g. BASF, and ask for starting formulations for SPF30

[David]

The “myth” that parabens get absorbed may come from food industry where migration of chemicals from /into plastic packaging is important as they can end up in the food. However, that all parabens somehow will migrate into the packaging is not realistic.

[David]

Hi, I am David, founder of Cosmetic Labsolutions.

We are formulating, testing and preparing EU safety assessments.

We are located in Berlin.

Feel free to have a look @  http://www.cosmeticlabsolutions.com

Bis bald 

[David]

THis must be the patent
https://www.google.com/patents/US20140343170

[David]

It never stops surprising me how often cosmetic formulating is driven by marketing, misinformation and fear (although it actually is a science) . Non-color - color additive? When there are so many safe color additives around? I recently had a request for a color without a CI number… eh…..
-next challenge: I want something wet without the chemical dihydrogen oxide..any ideas?

[David]

For yellow 5 & blue 1 the sensient quote is ridiculously high if you buy 5kg lots
I bought 5 kg yellow 5 last time for €60/kg

[David]

Are you searching for a an EU safety assessor?

[David]

I couldn’t see anything in the video I wouldn’t access quicker with other (free) sites or just by google.

[David]

Activated charcoal is very effective in absorbing all kinds of chemicals and therefore a good marketing argument since most people know this. I cannot see how this will work in a shampoo though. The charcoal will just “grab” the the available ingredients in the shampoo formulation and get “deactivated”.
For marketing reasons use as little as possible without loosing the trust of your customers (who are buying it because they think it works). 0,5% is a good level for this purpose.

[David]

the term “broad-spectrum” is not clearly defined so that’s why you may get different answers. In one sense all cosmetic preservatives are “broad-spectrum” otherwise they wouldn’t classify as preservatives. If phenoxyethanol alone will be enough depends on your formulation and %.

[David]

A) no
no - TEA is a base
C) no the preservatives won’t work but a high pH could. (>

[David]

@Doreen81  allowed MIT level in rinse-off has very recently been decreased to
0,0015% 
http://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32017R1224&from=EN