research.development
Forum Replies Created
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alpha arbutin also forms needle like crystals on walls of beaker. How can we solve this problem?
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2 samples without licorice extract also turned brown. But their pH was approximately 9; may be at high pH this color change occurs.
another sample tried by replacing 4EDTA with 2EDTA and hyaluronic acid with Covacryl AC, having same % of licorice whose pH is 6. This sample has not changed its color.
what is your opinion?
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Hi! have you found the reason why your formulation turner brown?
I have also prepared some samples of alpha arbutin serum. some of them also turned dark brown within 2-3 months.
formulation contains aqua, EDTA-4Na, alpha arbutin, niacinamide, licorice extract, hyaluronic acid, PG, phenoxyeyhanol.
may be the chelating agent is not efficient enough to do the job. kindly share your experience.
waiting for your kind suggestions.
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add menthol crystals by dissolving in fragrance
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Same needles also form with alpha arbutin serum 2% + hyaluronic acid. kindly suggest solution.
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it will dissolve in fragrance oil, but it takes time. % will be according to your satisfaction level by using different concentrations. i will suggest to use it at low %age. I have tried it at 0.1-0.2 %
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except actinovol-3 no other alcohol is used…
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alpha arbutin is precipitating.. the result is derived by elimination method. is there any grade problem with alpha arbutin? i have tried it with 1% but still problem is not solved.
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carbomer, hyaluronic acid, preservative, polyhydroxy alcohol