Whitening and moisturizing skin care product
A skin care product and whitening technology, which is applied in the direction of skin care preparations, cosmetics, cosmetic preparations, etc., to achieve the effect of enhancing water-locking ability, significant effect and reducing content
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Embodiment 1
[0015] Example 1 Preparation of chloroform extraction parts of daffodils
[0016] Take 1.16kg of dried petals of daffodils, soak them in 12L volume fraction of 95% ethanol solution for 24 hours, heat and reflux for extraction 3 times, each extraction time is 2 hours, combine the extracts, filter, and the filtrate is concentrated into a distillate after recovering ethanol. paste, add 800mL water to dissolve, carry out equal volume extraction with chloroform for several times until the extract is colorless, the obtained chloroform extract is dried after recovering the solvent, crushed through a 100-mesh sieve, and the dry powder of the chloroform extraction part of daffodil is obtained.
Embodiment 2
[0017] The preparation of embodiment 2 daffodil extract skin cream
[0018] (1) Weigh 70g of caprylic capric glyceride, 50g of stearic acid, 50g of dimethyl siloxane, 40g of isopropyl palmitate, 10g of monoglyceride and 1g of methylparaben, mix and heat to 80℃ , melted and stirred evenly, as the oil phase;
[0019] (2) Measure 600ml of deionized water, add 80ml of 1,2-propanediol and 10ml of triethanolamine, stir to mix evenly, add 3.5g of the dry powder of the chloroform extraction part of daffodil prepared in Example 1 into the mixed solution, and heat to 85°C , stirring and dissolving evenly, as the water phase;
[0020] (3) Add the oil phase and the water phase to the emulsification pot, stir evenly, emulsify and homogenize for 6 minutes, stir and cool to 50°C, add 1g of essence, stir well, cool to 38°C, it is daffodil extract skin cream . The daffodil extract in the water phase was replaced by deionized water, and a blank control skin cream sample was prepared in the...
Embodiment 3
[0021] Example 3 Skin whitening performance test experiment of daffodil extract skin cream
[0022] Select 10 volunteers with healthy skin on the left and right forearm medial 3cm×3cm area as the test site, apply the sample to be tested prepared in Example 2 on one side, and smear the blank control sample on the other side. Use once a day in the morning and once in the evening for a total of 4 weeks. Avoid washing off with water after application. The melanin content in the skin was checked with a skin melanin tester produced by Germany CK Electronics before use and every other week. Calculate the skin melanin change rate according to the following formula: melanin change rate=skin melanin content measured after applying the sample / skin melanin content measured before applying the sample×100%.
[0023] The color of the skin mainly depends on the content of melanin in the human skin. The detection of the content of skin pigment can reflect the degree of skin aging and the wh...
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