Moisture-keeping face pack and method of preparing the same
A technology of wet noodles and hijiki, applied in the field of beauty and skin care products, can solve the problems of difficult to clean, greasy, unfavorable skin and the like
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[0031] Below in conjunction with embodiment the present invention is described in further detail. Unless otherwise specified, the ratios mentioned are all percentages by mass.
[0032] a) Preparation of Hijiki Extract A: After rinsing Hijiki with clean water, dry it at 58°C, then crush it through an 80-mesh sieve to obtain dry powder, add water to extract the dry powder for 2.5 hours, wherein the mass ratio of dry powder to water 1:33; use 1000W ultrasonic treatment for 12 minutes, centrifuge the above extract at 4500 rpm for 10 minutes, extract the precipitate in water at 77 ° C for 1.5 h, then centrifuge as above, and extract the precipitate with 2% sodium carbonate alkali for 1.5 h, centrifuge in the same way, combine the supernatant obtained in the above steps, adjust the pH value of the supernatant to 7.0, concentrate under reduced pressure and vacuum at 0.1Mpa, 56°C, use the Sevage method to deproteinize the concentrated solution for 3 times, and use the volume fraction ...
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