[David]

You seem to have a totally different formula - no wonder it doesn’t perform as the benchmark. If I got this task I would start with using the same main ingredients - and then substitute them one by one.

[David]

If I understand you right your question is kind of a contradiction.

You are asking if an oxidative hair color can be non-oxidative.

- well, no.

[David]

I was actually working with this as a serious project. There is more to it than diluting a shampoo. Some info is given by  Bobzchemist links. To make a perfect soap bubble is an interesting challenge for a cosmetic chemist! (it has to be cheap as well…)

[David]

Have to agree with Bobzchemist

What you can do is to use google, e.g.:

ceteareth-25 + functions

this will lead you to the functions of the ingredients.

Stay aware that internet is not always a reliable source and double check your info.

If you have trouble interpreting the info, e.g. what does an emulsifier do?

Then you are welcome to ask!

[David]

@ celine13009 in that case I would start with buying the products and look what is inside. INCI names are mandatory on cosmetic products

[David]

@ celine13009 - if you have a benchmark post the inci list.

[David]

@Bill_Toge I think a consumer has no idea that PPD needs to undergo an oxidative polymerization - only that it is associated with hair color.(at best). Therefore it is a reasonable claim I think. Same goes for ammonia free - peroxide free etc.

[David]

I think the reason for that there are no stable sunscreens at 60C is that nobody has seen a market for it.

[David]

@heraklit thanks for the link - however it says:

 Substances occurring in nature are exempt from registration…..unless classified as dangerous - which I suppose means you first need to prove that they are safe?

[David]

Bill_Toge the extract yes but not the powder

[David]

Experimenting is the way to go - there is no way to calculate the amount of C.A. needed unless you know the exact composition of the soil, and even then you are faster just doing some tests.

[David]

ashish - It is still not clear what you are talking about.(at least not for me) There is a huge difference between a double-action shower gel(which is more of a marketing trick since almost every cosmetic ingredient have more than one function) and actually having  physically two different products side by side in one bottle.

@ozgirl - the link is not working - says out of stock

[David]

ashish I have seen both with and without emulsifier. - however since you have a stabilty problem that is a way to go.

[David]

Try some other emulsifiers.

[David]

@luiscuevasii - adding pg or glycerine  won’t really work unless you add a lot - see table below

http://www.dow.com/optim/optim-advantage/physical-properties/vapor.htm

[David]

Could you be a bit more precise?

http://www.urbandictionary.com/define.php?term=slick

[David]

I am not an expert in dissolving SA, but I think MarkBroussard gave you useful info- use it!

PG is not a known irritant.

[David]

In the EU some oral care products are definitely cosmetics and are related to cosmetic science. I think the question could be more specific though.

[David]

The short answer is that with increasing regulations it is harder to keep your formula secret, so I would say yes it is more and more typical that clients for different reasons ask for exact formulations. (at least in the EU) There are usually ways to go around it but that will be the long answer…

[David]

If you stick to the chemistry it is not confusing.

coco betaine is cocamidopropyl betaine minus the “-amidopropyl” part of the molecule.

[David]

@  Belassi “ethical” or not - you’ll need a safety assessment done by a qualified safety assessor in the EU.

[David]

As far as I know there are no official guidelines for making a conversion from the powder to the juice - at least not in the EU. The conversion makes no sense anyway since it would then possible to have >100% of the Aloe vera juice in a formula.

@Belassi I would say it would in that case be correct to list the a.v.juice on top (in the EU)

[David]

It is a UV filter

[David]

I made something similar once - I then used an acrylate to stabilize the formulation. Too thick is rarely a problem - just decrease one of the thickening ingredients - f.ex Peg-4 Rapeseedamide.

[David]

Good point MarkBroussard - I suppose he/she meant Gluconolactone/sodium benzoate.mixture