The invention provides freeze-dried
powder having whitening activity and a preparation method and application of the freeze-dried
powder. The freeze-dried
powder consists of
tranexamic acid,
nicotinamide,
mannan and
ascorbyl glucoside. The freeze-dried powder can effectively lighten
melanin; after being used for a long term, the freeze-dried powder can brighten
skin color and whiten
skin; the freeze-dried powder is free from
chemical preservatives, does not stimulate the
skin, is stable, does not
change color, and is high in product activity, safe and effective. The invention also provides a preparation method of the freeze-dried powder. The freeze-
drying time can be effectively shortened, the freeze-dried powder is energy-saving and environmentally-friendly, the production cost is reduced, and a freeze-dried powder product which is good in shaping effects, firm in appearance, high in redissolution speed and good in solution
clarity can be prepared. Besides, the freeze-dried powder canalso be directly added to other
cosmetics in a liquid preparation formulation, such as essence and
moisturizer to dissolve for use, and can also mutually dissolve with a
solvent to be added to
cosmetics in a
solid preparation formulation, such as
moisturizing cream, to be uniformly stirred for use, so as to reinforce effects, and a new development thinking is provided for development of whiteningproducts.