Lisa18
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- Lisa18
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Comments
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@ketchito, final ph is 5.8. I use a preservative system based on phenoxyethanol, benzoic acid and dehydroacetic acid. Sodium chloride is present around 0,1%. Surfactants are: ammonium lauryl sulfate, Coco glucoside and cocamidopropylbetaine. Beads a…
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The prototype is ok and it is in stability. I have used almond oil, jojoba oil and emollients like coco caprylate. I have preserved the emulsion with phenoxyethanol and ethylhexylglycerin.
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Parfum is 6% and at the moment we use emuclear as solubilizer but it' s a etoxylathed solubilizer
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Aqua q.b 100% Ethanol 40% Parfum 6% Distilled water 2% Actives 1%
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thank you chemicalmatt.I use sodium phytate as chelante.caprylyl glycol gave me viscosity drops in emulsion
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thanks for your comments. they are always welcome
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I use naOH solution 30% to pH 5.5 but I don't use a buffer system.Perhaps aloe vera gel ( acidic pH) can decrease final pH?
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In creams with high % of Aloe but whitout polymers, do you insert always a buffer system?
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Formulation that lost viscosity contains 1% euxyl pe 9010 as preservative system.koko test is passed. Ethylhexylglycerin can influence viscosity after a long time of storage?
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Thank you very much.very interesting!
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Thanks @ doreen. I also always use chelating agent to help stability. What % of polymer do you consider?
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Thank you very much Belassi. I realized some formulation similar to yours but I have used polymer instead of carbomer.the sample are 7 months old
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I realized organic certified face cream with 7-8% of Organic Aloe vera gel and result is good.in.this case there aren' t polymers or carbomers because they aren' allowed by standard
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In the past I realized an Aloe vera dermogel and I use mix of xanthan gum and sclerotium gum to reach a desidere viscosity because Aristoflex Avc didn't thicken the system.i agree with you.I had the same.experience. But when I realized face cream wi…
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So do you think the viscosity variations are seen immediately?
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But did you use aloe vera gel only with traditional gums and emulsifiers or even polymers?
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thanks. for some years I use aloe gel in emulsions where there are both traditional emulsifiers and polymers (in my case Aristoflex avc) and I have not had any problems. lately, however, in some prototypes I have seen some drops in system viscosity …
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customer admits polymers but does not want silicones
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Exactly
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In emulsion?
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Not even with polymers?
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thanks for your advice. for a few years I'm formulating without the traditional ingredients (peg, parabens, ethoxylates, silicones) and I'm trying to better understand stability and long-term behavior. can use xanthan gum increasing quantity of emul…
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Not even very small amount of aloe? I have already formulated PEG free emulsions in the past with Aristoflex Avc and Aloe but I haven' t noticed variations. Theregore this lods of viscosity can be considered normal?
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My client is very demanding! If we indicate a 12 months PAO, we must garantee a good product life even if it' s not simple..
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We have formulated opaque shaower gel with polymers without SLES and PEG but afetr some times (1 month) the opacifying precipitates.Do you have any suggestions? Thanks Lisa
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Thanks for you for your valuable advices. Surfactant base of my shower gel includes 'ammonium lauryl sulfate' as primary surfactant. Could it be a interaction between primary surfactant and preservative (phenoxyethanol, dehydroacetic acid and benzoi…
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If cream passed 3 months stability test at 40 C, what will be its duration?
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Thank you very much.And how much should they keep on average?
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Thanks Perry, I read the very interesting link related stabilty protocols.Therefore, of each prototype I take 3 samples and place one at 40C, one at RT and one at 4C.Keep then for 3 months monitoring every 2 weeks.Is correct? And thermal cycles how …
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Thank you for your comments. do you believe that the results of a 48 h occlusive patch test are quite exhaustive?
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