DRBOB@VERDIENT.BIZ
Forum Replies Created
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AGREED but patent is expired—in case someone wants to use concept:also there are ways around it.
US4322400A Legal status
Expired - Lifetime -
GEOGUARD 111S used at 0.3-0.4% AT pH 2—6.5 will provide more flexaility
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I would add a preservative as 5% ethanol will not pass USP preservation.You cn add 1% geoguard ultra (gluconolactone/benzoic acid) or DHA at PH 5.You can get either from lonza
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EDTA disodium is a chelate which enhances action of some preservatives which can be used with any on the list except i would stay away from K-sorbate which is not effective above PH 5.-5.5 at which point it discolors in storage.Suggest 1% phenoxy ethaanol.
In general i think the formula lacks foam particularly quality of foam as CAPB provides an open lacey foam as compared to tight bubble foam which is preferred by most consumers. -
heat will not affect it but could never demonstrate any effectiveness for it in clinical testing.However it does keep some customers happy.
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See 21CFR 700.Manufacturer is responsible for monitoring levels as per safety guidelines for heavy metals.
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I believe propellant 152A is mostly used now which we are using for current aerosol product.Someone else please weigh in on this.
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Agree you should get Cof A form supplier with list and ranges/limits.You cn add Dissolvine GL 47 ac chelate if needed to your product/s if in doubt.
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I hope you have a lot of product liability insurance and make sure all your vendors do also.
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definitely consumer perception via mother in law tests or monadic brief consumer use test with at least twenty people.Hair Care- salon for openers using half head studies followed by follow-up with patrons as per their perception.You have to expand from there into more sophisticated consumer testing which I think you all know.I am an open-minded skeptic and although in-vitro studies show panthenol penetrates hair shaft-absorbs water and swells to provide body, I haven’t proven this as per the above.
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You can also use cationic guar for wet/dry combing at 1%.Panthenol will wash out and best used in conditioner although with cationic guar(HPTG) could aid deposition.If you are working with cost I would go the HPTG (hydroxypropyltrimonnium guar for aesthetics.
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Suggest systematic deletion.Start with separation of water and oil phases and accelerate color formation if you can at 50C.I would bet on the water phase looking at homogeneity of color and if so do knockout which should be easier with phase separation.Do the same with oil phase.
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Viola ultra dull hair and a lot of tangles!
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I could not agree more with Perry and John.Natural shampoos are poor in performance.
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Most definitely.
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Elise problem is crystallization of too much B wax so I would cut it to 10 percent and lower petrolatum to 40 and replace with jojoba to improve oily aestheticsYou can back add paraffin or carnubba if needed to replace B wax
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Where is SLS in your change as I only see sles which won’t cut it.cation i.e. Na or NH4 should not make that much difference?
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Beeswax particularly at the level you are using will give crystallization problems: try carnubba which should provide nice properties in the presence of that much petrolatum.
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@vjayI was originally thinking of Dow Ethocel.You can get different grades to customize your product.Note directional formulae in the bulletin http://msdssearch.dow.com/PublishedLiteratureDOWCOM/dh_004f/0901b8038004fb7c.pdf?filepath=/192-00818.pdf&fromPage=GetDoc
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@vjay—Yes—-When the degree of substitution of ethyl is between 0.7 and 1.7, Ethyl Cellulose is soluble in water; while it is higher than 1 .5, it is soluble in organic solvents. The DS value of Ethyl Cellulose produced in the U.S. Is between 2.2-2.6. The product is soluble in the mixed solvent of hydrocarbon and a lower alcohol, ketones, and ethers with low molecular weight.http://celluloseether.com/ethyl-cellulose/
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start with Zinclear IM 50JJ Dow .I think all you need is about 15%, which can be added to oil phase for SPF 15 and if natural you are stuck with gums such as xanthan for rheology but should work.Water resistance will be main problem.
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ETHYL CELLULOSE may work
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Somehow we have missed the main problem which as you initially said was precipitation after six months presumably at ambient RT meaning need for cosolvent with water.For three variants suggest make up 30:70 -50:50 &70/30 propanediol/water and do low temp i.e. 40C to accelerate flaking with control based on your current system.
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Trail and error it is:we finally wound up with a mixture of 1,3 propanediol and pentylene glycol.Using mixed alpha hydroxy acids with which you can go lower and still make an acceptable peel without stinging.
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Try 1% silicone dimethicone or D4 D5—-also low level of Hydroxyethylcellulse should help—your call!