Chemist77
Forum Replies Created
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@Stanley are you trying to copy a benchmark here?? I have been there but honestly had the same issues which you are facing now. Eventually I just gave up, even the customer couldn’t provide me with a benchmark.
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@Sibech my next question was going to be the INCI name for mentorens???
Happens with all of us all the time, surely most could relate what it meant. -
@Sal I think for serum you can try carrot oil as well which is almost dark crimson, comes from CLR Berlin.
As for shampoo, I think @Gunther has given the best solution. The appearance will be something of suspended mica as you desire.
@Gunther I have used cetearyl alcohol in a shampoo base in the past, TBH not a big fan as there are stability issues, foam issues and much ado about nothin with it in the formulation. -
For shampoo you can use a polymeric opacifier like Opulyn 301 which is acrylates/styrene copolymer.
For oily serum it is indeed very difficult to suspend anything and as @Belassi pointed out the absence of yield factor in such oil only formulations. Best maybe you can mention ‘shake well before use’. Or someone can chip in with a more acceptable solution. -
Did you change supplier for Guar HPTC or any of the raw materials in the formula. Once dispersed and neutralized, it should not happen what you are facing.
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@Colorfuljulie oh we all do, can’t have laughing gas but thank God @Belassi is there ??
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I wake up on time with bitter sweet alarm, caffeine comes later in the office??
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I hope they have sent you the product TDS, if not please download from Dow. Com and you will get all the information there. They specifically mention octyldodecanol as the solvent to disperse Ethocel. I have a sample on my desk where it is an oil gel with apricot shell and i don’t see any settling of the scrub particles. The start @3-5% I think should do the job for you.
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@Belassi another advantage to be here, have to learn telepathy now. About time!!!???
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No methocel wouldn’t, it’s that grade only that I mentioned.
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Did you check Ethocel 100 Premium from Dow??
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@dharmaraj there is no direct calculation, but you can start with 0.3% and see how much further you need to increase the dosage.
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You could use cationic like Chlorhexidine digluconate and use a cellulosic thickener to build up the viscosity. Just need to find the right cellulosic thickener, I have used from Dow range and it seems pretty acceptable.
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Aculyns from Dow ain’t bad either.
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The only way out here as per my experience is to add the EOs immediately after the surfactants if it is not a hot process. More mixing time might help along with high surfactant matter in the formulation.
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Add more TEA, there is a ratio for such neutralizations provided by Lubrizol.
Think the polymer has not been completely neutralized.
Generally for such formulations, I suppose Aqua SF 1 and Aqua SF 2 are used. -
A very insightful and interesting discussion, loved it.
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Dimethicone is the best remedy to reduce/diminish soaping to a great extent. A very little goes a long way.
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@Belassi AOS has the capability of creating a cheap formulation, but then it is a very powerful degreaser as well.
@hollywoodstyle I think economical/cheap and sulfate free don’t go together until and unless you can sell a horribly underperforming excuse of a product labelled as a shampoo. -
@Perry the COCAMIDE MEA works great in clear systems too, never heard it to be used as opacifying agent though.
I see that 0.1% Vitamin E as well, with such low surfactants this oil will crash the viscosity over time. As Perry said, readjust the surfactant ratio and in my opinion that Vitamin E isn’t a hero in this formulation. -
I too tried this one, knocked it off pretty nice but on standing the mica was knocked down to the bottom. I just gave up on the idea, not a very sellable concept in fragrance industry.
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Gunther I have always realised that it is difficult to give one specific ratio in such neutralisation. For me it varied from.0.5% upto 1% and I could never tell my customers a fixed ratio. Better go in little incremental dosages.
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@Belassi OAP plus Sodium, stinking idea ???
@Perry think Belassi was just trying to make the situation lighter -
@Dtdang Look there are many buffers to replace Triethanolamine e.g. you could use NaOH, KOH, AMP-95, L-Arginine Neutrol TE, etc. The choice is yours and I suggest try to do your own research as well. Will help you to learn things in a much better way.
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@Belassi can we do it in situ ??????