Skin care composition
A technology of mixtures and extracts, applied in the direction of drug combinations, skin care preparations, skin diseases, etc., can solve problems such as unattractive and oily, insoluble active substances, etc.
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[0099] Skin penetration of dipeptides was measured in vitro using a Franz diffusion cell. Franz cell chambers are recognized in vitro skin penetration test devices to determine the extent of penetration of a given product into or through the skin. The Franz cell apparatus consists of two main chambers separated by a membrane. The membrane in this experiment was cut from a porcine skin sample and placed between the chambers of a Franz cell with an effective diffusion diameter of 0.9 cm. The receptor chamber had a volume of 4.2 ml and was filled with a receptor fluid consisting of 20% ethanol in water. Throughout the experiment, the contents of the receptor chamber were continuously stirred by a small magnetic stirrer. The skin temperature was maintained at 32°C by adjusting the water circulation system to 37°C. The donor chamber is open to atmosphere. Using a smooth spatula, 200 ml of the test composition containing the same peptide concentration was evenly applied to the s...
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