| abstract |
The present invention provides a solid mask and a preparation method thereof. The solid mask includes a hydrophobic substrate layer and a nanofiber layer, the nanofiber layer has a three-dimensional structure and is electro-spun onto the hydrophobic substrate layer through uniaxial electrostatic spinning technology, and the nanofiber layer is prepared by the following food-grade raw materials in parts by mass: 10 to 30 parts of gelatin, 1 to 30 parts of soya bean lecithin and 0.1 to 10 parts of a functional substance. The present invention provides a solid mask, using gelatin and soya bean lecithin as the framework. The nanofiber layer is a three-dimensional laminate made of fibers having a diameter of a few hundred nanometers. The nanofiber layer has a membrane structure similar to the extracellular matrix. The raw materials of the solid mask are all food-grade raw materials or natural extracts. |