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shimmer spray suspension
working on a shimmer spray. My problem is over time the shimmer starts to fall. I tried increasing the aqua SF-1 to 8% it but then its too thick for the inexpensive sprayers. It skeets out with force and not in a round pattern. What is a secondary stabilizer or thickener I could use. should I expect a pH of this?
Water - 40%
Aqua SF-1- 7.5%
glycerin - 2%
alcohol - 45%
NaOH- 0.4%
phenoxyethanol -0.75%
The rest is shimmer, fragrance -
13 Replies
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You can try to use XanthanGum-0.3-0.5%
Try to use - LAPONITE- Nano particles of synthetic hectorite, give you transparent Gels,
Or even try- Optigel.
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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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It looks like your polymer level is too low for proper suspending.
https://www.stobec.com/DATA/PRODUIT/2175~v~data-sheet.pdfThe supplier recommends 8 - 10%. You could probably experiment with adding a small amount of salt to reduce the viscosity.
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@Perry here the issue is change in spray pattern from the nozzle. Because of the cohesive property of this polymer, the spray properties are absolutely undesirable.
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I recently discovered that gellan gum produces high yield but low viscosity, you might try that.
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This is a similiar issue I am having. I like the idea of trying salt to reduce the viscosity.
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what percentage of salt should I try -0.5%
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I have knocked off this entire product and it was easier than you may believe. I can’t of course share a Formula, but the INCI is “Alcohol SD40B, Water, Fragrance, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Aminomethyl Propanolol, Calcium Aluminum Borosilicate, Silica, Blue 1 (CI 42090), Ext. Violet 2 (CI 60730), Yellow 6 (CI 15985), Mica, Titanium Oxide.”Abandon going “natural.” Research the INCI names and you should able to see what each ingredient does and with a study, reverse engineer it yourself. I am trained, but I recall the entire formulation process took me less than 10 hours to complete from start to finish with testing. It is surprisingly easy. -
How long should shimmer be expected to stay suspended? Should a better sprayer be used to keep the fine mist of the spray?
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@Microformulation that is cool!!!
Instead of using the Aqua SF-1 I was going to use Ultrez 20 and neutralize with NaOH.I am assuming you are using more alcohol to avoid using a preservative?
Do you mind me asking what is you final pH range?
When the packaging from BBW says “diamond dust” what exactly is that? I understand a mica or glitter but is that indicative of a particle size that won’t clog the sprayer?
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No, I used that much alcohol since it was going to be used as the base of a fragrance. The initial standard was a Victoria standard fragranced shimmer spray.Why did I use the other materials? I won’t tell you simply because you will gain more reading up yourself.The final pH range was about 5.0I would never use alcohol as a primary preservative unless there was an over-riding reason, usually being solubility of some material or the presence of alcohol due to another ingredient.Research the materials. As I said, this was an easy project to find documentation and starting formulations.
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@Microformulation Thank you so much! I have learned alot from already..I assume it the “finer details” that I am looking for that come from experience that I am curious about. I have looked up the chems.
The reason why I asked the question about alcohol is I was told that if you have less than 30% water the need for a preservative is minimal. I am sure there may be different schools of thought on this…that is why i asked.
It wouldn’t hurt if my pH was a little higher than 5?
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Ok folks up!!! I used Ultrez20 and a little tweak here and there and it came out really cool. I did put it in the 55C oven last night and it did not suspend the glitter. I am going to do the 40C overn over the weekend. But over all I am very happy with the results. What is the expectation on suspending the mica?
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