Composition for skin anti-ageing treatment
A technology of composition and extract, which is applied in the field of anti-aging treatment, can solve the problems of aggravating skin aging and wrinkles, and achieve the effect of avoiding the effect of estrogen and saving high costs
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Embodiment 1
[0041] Formulations in gel form were prepared at the following weight percent (p.b.w.) (%) composition:
[0042]
[0043] *The term "carbomer" means acrylic acid homopolymer crosslinked with polyalkenyl polyether.
[0044] a) Dissolve the following ingredients in purified water (percentage by weight): Propylene Glycol 12% (percentage by weight) - Sodium Methylparaben 0.26% - Sodium Propylparaben 0.03% - Disodium EDTA 0.10% - Carbomer 0.75 %.
[0045] b) The following ingredients were dissolved in 5% ethanol (percentage by weight): vitamin E acetate 0.02%-phosphatidylcholine 0.85%-cholesterol 0.01%.
[0046] c) heating a) and b) separately at 60°C and combining them, homogenizing with a suitable turbo mixer; cooling the compound to 40°C and adding 1% (by weight) mother hop tincture under gentle stirring; 0.05% sodium hyaluronate premixed in a portion of the total purified water to form a homogeneous gel was added to the compound with stirring.
[0047] d) 0.20% imidazolid...
Embodiment 3
[0066] In order to test the different antioxidant activities of the composition according to Example 1 versus the comparative compositions 2-5 of Example 2, at different concentrations (0.500-0.016 mg / ml), in keratinocytes with and without test samples , after exposure to ultraviolet light A (UVA), tested against reactive oxygen species (ROS), cell survival after UVA stress was evaluated by the neutral red uptake (NRU) assay: cell survival assay using test samples with and without Human keratinocytes cultured in monolayer culture.
[0067] preparation
[0068]Human primary keratinocytes were obtained from pediatric foreskins during pre-planned routine surgery with approval from the ethics committee. The epidermis was isolated from the dermis by three static incubations and trypsinized to generate a single cell suspension.
[0069] In Dulbecco's modified Eagle's and Ham's F12 media (3:1) enriched with 10% fetal bovine serum (v / v) and specific enrichments (specific enrichmen...
Embodiment 4
[0081] In order to test the different collagen regeneration activities of the composition according to Example 1 versus the comparative compositions 2-5 of Example 2, the collagen synthesis in human skin fibroblasts treated with the test composition was evaluated in vitro at different concentrations ( 2.50%, 1.25%, 0.63%) for testing. Ex-novosynthesis of collagen was measured by colorimetric assay.
[0082] preparation
[0083] Test products are diluted in cell culture medium to achieve the final concentrations selected for testing. For preliminary cytotoxicity tests, products were tested at 20%, 10%, 5%, 2.50%, 1.25%, 0.63% and 0.31% (w / v). Based on toxicity data (IC 50 =6.79%, non-cytotoxic), select 3 different non-cytotoxic concentrations to continue the test. The concentrations chosen for potency testing were 2.50%, 1.25% and 0.63% (w / v). Cells were exposed to test products for 24 and 48 hours. At the end of each experimental time, neo-synthesis of extracellular ma...
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