Whitening and antipruritic hand cream
A hand cream and whitening technology, used in skin care preparations, cosmetics, skin diseases and other directions, can solve the problems of dull skin, non-drying, no ideal effect, etc., to maintain non-drying, improve activity, and inhibit melanin production. Effect
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[0026] The preparation method of the Inula extract described in Examples 1-5 includes: washing and drying Inula, crushing through a 40-mesh sieve, adding 75% ethanol at a material-to-liquid ratio of 1:12, refluxing for extraction for 2 hours, and rotating the extract. Evaporator can be concentrated to remove ethanol.
[0027] The preparation methods of the extracts of Fructus Radix in Examples 1-5 include: washing and drying Radix Radix et Rhizoma, smashing through a 40-mesh sieve, adding 80% ethanol according to a material-to-liquid ratio of 1:40, soaking for 7 hours, and sonicating at 70° C. After extraction for 75min, the extract was collected and concentrated by rotary evaporator to remove ethanol.
[0028] The preparation method of the Tiankui extract described in Examples 1 to 5 includes: washing and drying Tiankui, pulverizing it through a 40-mesh sieve, adding 80% ethanol at a solid-liquid ratio of 1:13, and leaching in a constant temperature water bath at 90°C for 2 h...
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