A kind of whitening facial mask and preparation method thereof
A technology for facial mask and blemish reduction, applied in the field of whitening blemish reduction facial mask and its preparation, can solve the problems of safety, high skin irritation, narrow pH tolerance of chemical preservatives, etc., achieves wide pH tolerance, improved The effect of dull skin and suitable viscosity
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Embodiment 1
[0048] Embodiment 1, preparation of pistachio seed extract
[0049] S1. Take the pistachio fruit, dry it, crush it, add 80% ethanol solution of 8 times the amount of the raw material, extract at 81°C for 95 minutes, filter, keep the filter residue, concentrate to remove the solvent, and obtain the ethanol extract;
[0050] S2. Take the filter residue, add 5 times the amount of ethyl acetate to extract the filter residue twice, each time for 80 min, combine, remove the solvent, and obtain the ethyl acetate extract;
[0051] S3, the ethanol extract described in step S1 and the ethyl acetate extract obtained in step S2 are mixed in a weight ratio of 3:2, concentrated into a suspension, the suspension is purified by polyamide resin, and activated carbon is used after purification Decolorize and concentrate to obtain the extract, namely the pistachio seed extract.
Embodiment 2
[0052] Embodiment 2, preparation of pistachio extract
[0053] S1. Take the pistachio fruit, dry it, crush it, add 90% ethanol solution in an amount 8 times the amount of raw materials, extract at 81°C for 95 minutes, filter, keep the filter residue, concentrate to remove the solvent, and obtain an ethanol extract;
[0054] S2. Take the filter residue, add 5 times the amount of ethyl acetate to extract the filter residue for 3 times, each time for 75min, combine, remove the solvent, and obtain the ethyl acetate extract;
[0055] S3, the ethanol extract described in step S1 and the ethyl acetate extract obtained in step S2 are mixed in a weight ratio of 3:1, concentrated into a suspension, the suspension is purified by polyamide, and activated carbon is used for decolorization after purification , concentrated to obtain the extract, namely the pistachio seed extract.
Embodiment 3
[0056] Embodiment 3, preparation of pistachio extract
[0057] S1. Take the pistachio fruit, dry it, crush it, add 85% ethanol solution in an amount 8 times the amount of raw materials, extract at 81°C for 100 minutes, filter, keep the filter residue, concentrate to remove the solvent, and obtain an ethanol extract;
[0058] S2. Take the filter residue, add 5 times the amount of ethyl acetate to extract the filter residue twice, each time for 80 min, combine, remove the solvent, and obtain the ethyl acetate extract;
[0059] S3, the ethanol extract described in step S1 and the ethyl acetate extract obtained in step S2 are mixed in a weight ratio of 3:1.5, concentrated into a suspension, the suspension is purified by polyamide, and decolorized by activated carbon after purification , concentrated to obtain the extract, namely the pistachio seed extract.
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