Cosmetic brush

A hairdressing brush is provided, which comprises a brush cap, a brush head and a brush holder. The utility model is characterized in that: the lower section of the brush holder is connected to an external and an internal brush cylinder, a feed pusher and a retractable body made of elastic materials. The operational process of the utility model is: open the brush cap, push the tail section of the internal cylinder to compress the retractable body; then the feed pusher will impel the cosmetics into an output end of the internal cylinder and the cosmetic can enter the brush head via a feed conveyance unit; when the user releases its hold of the utility model, the retractable body will resume its original form and the cosmetic inside will not flow out as the inside of the cylinder is provided with vacuum status; after use, the brush cap can be closed to envelope the brush head. The utility model has the advantages that: (1). effectively preventing the leakage of cosmetic and convenient control of the dosage for hairdressing powder; (2). eliminating the inconvenience of carrying the hairdressing powder and brush separately; (3). novel and skillful design and simple application.