Body cream with Aristoflex avc
Lisa18
Member
in Formulating
good evening to everyone.
i formulated a body cream based on Cetearyl alcohol and Cetearyl glucoside at 3% and glyceryl stearate 1,5%. As gelling water phase I have used Aristoflex avc at 0,6%. The cream contains 15% oil phase and 0,2% aloe vera gel and 2,3% fragrance. the result is good and also the stability tests, but after 2 years there is a loss of viscosity. Can fragrance cause it?
thank you very much
i formulated a body cream based on Cetearyl alcohol and Cetearyl glucoside at 3% and glyceryl stearate 1,5%. As gelling water phase I have used Aristoflex avc at 0,6%. The cream contains 15% oil phase and 0,2% aloe vera gel and 2,3% fragrance. the result is good and also the stability tests, but after 2 years there is a loss of viscosity. Can fragrance cause it?
thank you very much
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If we indicate a 12 months PAO, we must garantee a good product life even if it' s not simple..
Theregore this lods of viscosity can be considered normal?
lately, however, in some prototypes I have seen some drops in system viscosity and I am trying to analyze the causes. These viscosity drops occur, however, after long storages.
But when I realized face cream with emulsifier and consistency factors ( and Aristoflex Avc to stabilize the system)and with Aloe vera gel I reached desired viscosity.
Small amounts of electrolytes will be tolerated oftentimes, also depending on the % of polymer you use of course. I nearly always use a chelating agent (diNa EDTA or Na phytate) and I've never noticed viscosity drops due to this.
@Lisa18
You can also test electrolyte tolerance by adding kitchen salt (NaCl, KCl), it's the cheapest way.
I also always use chelating agent to help stability. What % of polymer do you consider?
What I meant with the chelating agents was that these are also electrolytes (regarding viscosity drops due to electrolyte sensitive polymers).
I always use them according to the hurdle technique to enhance the preservative system.
The % of polymer depends on what polymer you use (does it have emulsifying properties like AVC, Pemulen and do you use other emulsifiers with it, electrolyte sensitivity etc etc) and all of the other ingredients and the % of those.
The recommended % is nearly always mentioned in the (technical) data sheets of the manufacturer.
@Lisa18, if you use Aristoflex as the only emulsifier its from 1.5 to 2% depending on desired viscosity. I usually use 0.5-0.75 because I add other emulsifiers and fatty acids.
That's annoying! I never use aloe so I have zero experience with it. Lately I've had my first troubles with allantoin and I've been working with it for years. Now I've seen for myself how allantoin looks recrystallized.
True, and hard to preserve properly.
Today I will be making an anhydrous foot balm and disperse allantoin into it. My first time using it in an anhydrous formula!
I wanted a whipped, mousse like texture and had to put it in the freezer a couple of times for a short while, so I was afraid what the allantoin would do as it doesn't seem to like temperature changes much.
Right now (about 5 hours later at room temperature) I still don't feel/see any shard like crystals, hopefully it will stay that way!
It has become a lovely, pink coloured mousse, not grainy or anything.
60% shea butter (refined)
10% aby butter (abysinnian oil, hydrogenated vegetable oil)
0.1% BHT
0.1% propyl paraben
jojoba oil ad 100
1% allantoin
1.5% cyclopentasiloxane
0.2% fragrance
Gromwell Root CO2 extract (Simmondsia Chinensis Seed Oil (and) Lithospermum Erythrorhizon Root Extract) q.s.
The extract was for the pink colouration. Gromwell root gives an intense deep red colour, so I only needed a needlepoint, a tiny speck for a light pink colour (it is even dilluted >50% with jojoba oil, and still so very concentrated!)
(It gives intense red when pH is acidic and turns blue when basic, and when there's no pH like here, it remains intense red.)
I just answered straight away without remembering this is your post and I'm way off topic. My apologies.
I have the idea that Euxyl PE 9010 can have influence on viscosity, I think because of the phenoxyethanol, but I might be mistaken. I've had some viscosity issues when using this preservative too. The difference is my viscosity change was quick and yours after 2 years. I agree with Perry, 2 years is a long time!