Cosmetic brush

A cosmetic brush comprising:

• a) an inner cylinder holding cosmetic powder therein and having an outer surface with a plurality of soft hairs connected thereto;
• a sliding outer cylinder slidingly placed on the inner cylinder's outer surface to cover said plurality of soft hairs;
• a pressure pump joined to a rear end of the inner cylinder and supplying air to spray the cosmetic powder toward the soft hairs;
• b) said soft hairs are joined to a coupling chamber having a threaded portion at a rear end thereof, and said inner cylinder having a threaded portion at the front end thereof so that said inner cylinder and said coupling chamber can be screwed to each other and separated from each other;
• c) said inner cylinder having seal covers;
• said seal covers attached to both ends of said inner cylinder prior to said inner cylinder being assembled to said coupling chamber and said pressure pump such that a new inner cylinder holding cosmetic powder can replace a used inner cylinder after removing said used inner cylinder from said soft hairs and said coupling chamber when the cosmetic powder in said used inner cylinder is used up;
• and
• d) a protective cap covering said sliding cylinder's front end and slidingly enclosing said soft hairs along with said sliding cylinder to protect said soft hairs.