David
Forum Replies Created
-
Indications for use of e.g. quite similar Euxyl K 903 from S & M answers both your questions;
“When using euxyl® K 903 prolonged heating periods (max. 4
hours) > 80 °C should be avoided.
It is advantageous to add euxyl® K 903 in the cooling phase e.g.
with the fragrance (t < 40 °C). “ -
Why use olivem unless you want an ecocert formula? There are plenty of alternatives, e.g. ethoxylated fatty alcohols
-
I would change the Sodium Lauryl Sulfate into Sodium Laureth Sulfate
-
Make a hair gel. Changed PVP K30 into the new (?)PVP K90 and increased the level.
-
@Bill_Toge what does it mean “err and steer well”? Perborates I can understand but borax?
-
Regarding Borax the EU doesn’t seem to able to make up their mind. It is a CMR substance and therefore forbidden in cosmetics according to article 15 of regulation. However it is still allowed according to Annex III.- I have send >10 Emails asking them a simple question: Is borax banned? No answer what so ever. (they usually answer my Emails) grrr!
-
@Microformulation : Funny just got my EDGE last week…
Hanna recommended a conical tip for creams and lotions. Anyone tried this?
http://hannainst.com/hi10530.html -
I am only familiar to GC-MS. What you can do if you have a complex matrix is to fractionate it (manually) using e.g. a silica column from non-polar to polar. After that you can choose the proper GC-coloumn for each fraction.
-
The biggest advantage with working with a supplier base is the support you can get from them. I would simply let them formulate and evaluate the samples.
-
Hi @Pete - with how much I meant -how much money you would pay for it!
Joking aside - I don’t think I can send a sample full of mould with the post - isn’t this hazardous goods? -
@Pete you can have it - how much?
-
@johnb it is definitely mold - I didn’t believe either at first. - and I am also familiar with the resorcinol crystals
@Bill_Toge - yes, just humidity and moisture makes it grow.. -
Allantoin solubility (seems to fit @AnnaLavar s problem)
Solvents
T (°C)
%
Water
25°C
0.5
Water
40°C
1
Water
70°C
3.5
-
I think it pretty much adds up what cosmetics is about; selling a feeling.
-
Problem with “vintage” is that most of them contain illegal (or unwanted) ingredients. Vintage is synthetic - not natural
-
All waterbased mixtures (formulas) contain ionic species to some extent, even deionized water. You can only use fats and oils.
-
Yes.
-
and there are also silicone esters…
-
buoyancy is related to density - not to viscosity
-
I am (was) an analytical chemist before I moved to cosmetics. Your question needs a much deeper anaysis than what is possible to acheieve from a chat like this. Budget, detection limit, presicion, time, matrix differences (shampoos) , why the methods available don’t fit our lab. etc etc.
-
google south africa:
http://www.minema.co.za/Main.asp?
%7B025A878B-4A13-4A25-89A2-4EF28749623F%7D&PageType=Product&CategoryID=432&SKU=G7400GG -
Totally agree the “active ingredient” term is confusing
I think the German language has a better definition;Arzneistoff = pharmazeutischer Wirkstoff = active ingredient
In cosmetics only the term “Wirkstoff “is used. (“working” substance)
-
I’m sceptic that this combo has the same effect as PEG-90M, I like the minimalistic formula however.
http://www.in-cosmetics.com/__novadocuments/93037?v=635725647363000000 -
1. Does your final product even exist? Are you copying a benchmark?
2. How can a product be to hard and to soft at the same time?
3. Hold is limited in these type of formulations, due to that they never “dry out” on the hair as do water/EtOH gels -
@Rick Sure I know that product, it is good, but it does however not solve the stability problem.