Freeze-dried powder cake and preparation method thereof

The invention belongs to the field of cosmetics, and discloses a freeze-dried powder cake which is mainly prepared from the following raw materials in parts by mass: 0.0001 to 1 part of polypeptide, 0.01 to 1.5 parts of a strength regulator, 1 to 5 parts of a solubilizer, 0.5 to 10 parts of a shaping agent, 0.01 to 1 part of a buffering agent, 0.01 to 5 parts of a pH regulator and 300 to 2100 parts of water. The strength regulator is water-soluble cellulose or a water-soluble cellulose derivative. Water-soluble cellulose or a water-soluble cellulose derivative is added into the freeze-dried powder cake containing polypeptide, and a small amount of specific water-soluble cellulose or water-soluble cellulose derivative is added, so that not only is the addition amount of the shaping agent reduced, but also the finally prepared freeze-dried powder cake is drop-resistant and shock-resistant, and the problem that the freeze-dried powder cake is easy to break in the production, transportation and use processes is w