belassi
Forum Replies Created
-
1. The first ingredient is known to cause skin problems, what were they thinking?
2. Any product that grows mould within a reasonable usage period is not properly preserved. I see no preservative at all, in their LOI. Stupid. They deserve what’s coming to them. -
This is a very old thread. MEA works great as a foam stabiliser and thickener but you can’t use a lot or it will come out of solution. I settled on 1.5% as optimum. PEG150 is so dependent on temperature that it really isn’t a good answer.
-
Yes, it works great. There is an Aussie company selling a product based in this idea.
-
0.5% is the normal limit for papaya extract. You’re making a carbomer cream, not surprising you are getting trapped bubbles. Not a problem as long as you dispense by weight. If you can dispense at 50C then you should find the problem much reduced.
-
What you have there is basically a shaving cream formula.
-
polyvinyl alcohol
-
Well, I can’t really say for sure, but maybe they are including it for refattening and/or thickening. Or possibly, pearling. I’ve seen 2% of that produce pearling in a synthetic soap. You should do a knockout experiment to discover the reason.
-
KOH should be 7% not 6% according to the saponification calculation. I suggest removing the propylene glycol and retesting.
-
1. What Bob said.
2. Not very nice ingredients. Lard smells of pig. I actually tried making soap out of lard, it smelled terrible. The properties they have are nowhere near as good as other fatty acids. -
Very interesting to read what Mark said above. I began using carbomers and only recently decided to try gums, but frankly I found their performance disappointing. Much more difficult to work with.
-
It all depends on your purpose. Different fatty acids have different properties. But when you talk about soap, for instance, you talk about properties such as bubbly, creamy, etc. and when you talk about skin care, it’s a different conversation entirely.
-
Since vitamin A is a yellow or orange substance, and the two vitamins are both fat-soluble, my best guess is that a reduction reaction takes place and free Vitamin A is produced.
-
As Perry commented; and I would like to add, that you should separate your enquiries into two, because one product is very different in concept from the other. For instance, skin creams don’t generally have cationic ingredients. Hair conditioners do.
-
Update on this project:
I don’t think we will be going ahead with this kind of product. Many reasons, but some are:1. Difficulty of processing kaolin clay to remove lumps.2. Difficulty of dissolving polyvinyl alcohol and forming a smooth mix.3. Relatively large proportion of ethanol required to promote drying.4. Heavy duty powerful mechanical homogeniser needed to be able to deal with it.I did get to the point where I had a peel-off mask and I could see myself being able to produce a final product but it is too much time and effort to process. There are other areas more interesting. -
Akypo RLM45CA has a pH of about 3.5, it is a carboxylic acid.
-
Your first decision is whether to use saponified oils, i.e. traditional soap, or surfactants. There are surfactants that qualify as “natural”; Kao has some in its range.
-
Recently I had a sample of Apprecier arrive, and from the product literature, it claims to build collagen and have an anti-acne effect. However, getting stability is an issue with any vitamin C compound.
-
Thanks.
-
My own approach is not to use any lipids at all in our anti-acne product.
-
Depends on the fragrance oil you use, really. Some are much stronger than others. I have a cherry fragrance here that you wouldn’t want to use at more than 0.1% in a body wash, but generally I use 1% in body wash and shampoo.
-
It will settle eventually. I normally prepare my shampoos 24 hours in advance of bottling.
-
I’ve used 0.5% potassium sorbate at pH 5.5 in shampoo for years with no problem. Also sodium benzoate. Effective. In creams I use a combination of methyl and propyl parabens, and in gels I use Spectrastat.
-
I believe if you remove the olive oil from the formula your problem will go away.
However … 3% Lauramide MEA. I haven’t used this myself but I suspect that as with Cocamide MEA it will move the salt curve to the left and you may find that your 1.5% salt content is too high. You should calibrate the appropriate amount of salt to use by using a series of small test samples from 0.4 to 2% NaCl and see how the viscosity changes.Polyquaternium 10 is cationic and I’m doubtful about its compatibility with an anionic system, but others will be better able to comment on that. -
When you do decide on a brand name make sure you register it quickly. We spent weeks and weeks and weeks dreaming up brand names. Finally we found one. The local government said they would help us register it. Then we did an exhibition at the Beauty Show. Someone noticed us. Later we discovered a large company based in the capital had beaten us to it and registered a brand name one letter different, locking us out. So now we are waiting for our new brand and having to do a complete rebranding in the New Year.
-
Yes, must be Euperlan. Well spotted! Contains coco glucoside … I have already reported that I believe that coco glucoside may cause allergic reactions. And with the olive oil as well? Not surprised there’s a problem,