Face cream composition containing lipid nanoparticles with moisturizing and hydrating effects and preparation method thereof
A lipid nanoparticle and composition technology, applied in the field of daily chemicals, can solve problems such as loss of natural moisturizing factors, damaged skin function, and skin moisture lock, so as to prevent skin moisture loss and promote skin penetration. The effect of delivering and repairing the skin barrier
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Embodiment 1-3
[0057] A face cream composition comprising lipid nanoparticles with moisturizing and water replenishing effects, the proportion and content of raw material components are shown in Table 1 below.
[0058] The raw material composition ratio (unit: mass part) of table 1 embodiment 1-3
[0059]
[0060]
[0061] The preparation process of the face cream comprising the lipid nanoparticles with moisturizing and water replenishing effect of the above-mentioned embodiment 1 comprises the following steps:
[0062] 1) Dissolve 70 mg of sialic acid, 140 mg of Kappa longa cordata extract, and 140 mg of nicotinamide in 5 mL of deionized water to form an inner water phase (W1); mix 500 mg of glyceryl tristearate and Span 80 Dissolve in 15 mL of dichloromethane to form an oil phase; add the inner water phase to the oil phase solution at a volume ratio of 1:3, and use a cell grinder to sonicate for 3 min at a power of 60 W under ice bath conditions to obtain W1 / O-emulsion;
[0063] A...
Embodiment 1
[0086] Test sample: embodiment 1;
[0087] Test method: Use a third-party testing agency to test the safety. Select an area not exceeding 50mm 2 , with a suitable patch device with a depth of about 1mm, add about 0.02-0.025ml (g) of the test substance to the patch test device in a closed patch test method.
[0088] Stick the spot tester on the curved side of the forearm of the subject, remove the test substance after 24 hours, observe the skin reaction at 0.5h, 24h, and 48h after removal, and record the results according to the skin reaction classification standard in "Cosmetic Safety Technical Regulations 2015" .
[0089] Table 2 Patch test results
[0090]
[0091] Remarks: Skin reaction grading standard;
[0092] Level 0: Negative reaction;
[0093] Grade 1: Suspicious reaction; only faint erythema;
[0094] Grade 2: Weak positive reaction (erythema reaction); erythema, infiltration, edema, papules may be present;
[0095] Grade 3: strong positive reaction (herpes...
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